Recognised as Number
6,842
- Positive
- Even
- Composite
- 4 digits
6,842 is an even 4-digit integer and a composite number. It has 8 divisors and a digital root of 2.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value6,842
Digit count4
Digit sum20
Digit product384
Multiplicative persistence5times the digit product can be taken before one digit is left
Digital root2repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 11 × 311
Distinct prime factors32, 11, 311
Number of divisors8
Sum of divisors σ(n)11,232
Aliquot sum4,390sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)3,100integers below n that share no factor with it
Carmichael function λ(n)310the smallest exponent with aˣ ≡ 1 for every unit; smaller than φ(n) = 3,100
Möbius function μ(n)−13 distinct prime factors, an odd number of them
SquarefreeYesno repeated prime factor
All divisors1, 2, 11, 22, 311, 622, 3,421, 6,8428 in total
Arithmetic
Previous number6,841
Next number6,843
Double13,684
Half3,421
Square46,812,964
Cube320,294,299,688
Square root82.7163829≈irrational, shown to 9 decimal places
Cube root18.984289876≈
Negation-6,842
Reciprocal0.0001461561≈
Representations
Decimal6,842
Binary110101011101013 bits
Octal15272
Hexadecimal1ABA
Base 365A2
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordssix thousand, eight hundred and forty-two
Ordinalsix thousand, eight hundred and forty-second
Scientific notation6.842 × 10^3
Engineering notation6.842 × 10^3
In other bases
Ternary100101102base 3; the most digit-efficient integer base after e: 9 digits
Quinary204332base 5; one hand: 6 digits
Septenary25643base 7: 5 digits
Nonary10342base 9; each digit is two ternary digits: 5 digits
Duodecimal3b62base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 4 digits
Vigesimalh22base 20; hands and feet, and the Mayan and Yoruba systems: 3 digits
Sexagesimal1:54:2base 60; Babylonian, and still how an hour and a circle are divided: 3 digits
Balanced ternary10010111Tdigits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary110111111001110base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
0001101010111010
Bit length13 bitsto write the magnitude
Set bits8the population count, or Hamming weight
Zero bits5within that length
Bit parityeven8 set bits, so even; not the same as the number itself being even
Highest set bitbit 12worth 4,096
Lowest set bitbit 11 trailing zero
Power of twoNo
Bytes21a ba
Gray code1011111100111n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
16-bit0001101010111010
32-bit00000000000000000001101010111010
64-bit0000000000000000000000000000000000000000000000000001101010111010
One's complement1110010101000101at 16 bits, every bit flipped
Bits reversed0101110101011000at 16 bits
Rotated left by 10011010101110100at 16 bits, wrapping
Shifted left by 111010101110100= 13,684, no wrap
Shifted right by 1110101011101= 3,421, discarding the low bit
These bits as a double3.38039715 × 10^-320≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
6,842 to the power 246,812,964
6,842 to the power 3320,294,299,688
6,842 to the power 42,191,453,598,465,296
6,842 to the power 514,993,925,520,699,555,232
First ten multiples6,842, 13,684, 20,526, 27,368, 34,210, 41,052, 47,894, 54,736, 61,578, 68,420
Powers of twoBetween 2^12 (4,096) and 2^13 (8,192)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4No, remainder 2
Divisible by 5No, remainder 2
Divisible by 6No, remainder 2
Divisible by 7No, remainder 3
Divisible by 8No, remainder 2
Divisible by 9No, remainder 2
Divisible by 10No, remainder 2
Divisible by 11Yes
Divisible by 12No, remainder 2
Divisible by 100No, remainder 42
Collatz (3n + 1) trajectory
Steps to reach 157the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps6,842 → 3,421 → 10,264 → 5,132 → 2,566 → 1,283 → 3,850 → 1,925 → 5,776 → 2,888 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage684,200%
6,842% as a decimal68.42
6,842% of 1006,842
6,842% of 1,00068,420
As a fraction of 1006,842/100
Read another way
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Derived from 6,842
Also reads as
6842 (year)
- Common year
- 365 days
- 69th century
- Dog
6842 will be a common year of 365 days. It begins on a Wednesday and ends on a Wednesday. Easter Sunday falls on 13 April.
Structure of the year
Patterns forced by the calendar
Weekday counts52 of each, plus an extra Wednesday365 days is 52 weeks and 1 day, and the remainder starts on the weekday 1 January falls on
Sundays52
Mondays52
Tuesdays52
Wednesdays53one of the extras
Thursdays52
Fridays52
Saturdays52
Friday the 13th1 of them13 June
ISO weeks52an ordinary 52-week year
Same calendar as6831the most recent year whose calendar is identical, so a printed one could be reused
Calendar repeats in6853, 6859, 687011 years later, then again after that; the gap is 6, 11 or 28 years, broken by centuries that skip a leap year
Months of 6842
January31 days, starts Wednesday
February28 days, starts Saturday
August31 days, starts Friday
September30 days, starts Monday
October31 days, starts Wednesday
November30 days, starts Saturday
December31 days, starts Monday
Time references
These values depend on today’s date and change daily.
Unix timestamp at the start153,745,516,800
Unix timestamp at the end153,777,052,799
Years from now4,816 years from now
Days from today1,758,745 days to 1 January
The number 6842
As a number6,842
In wordssix thousand, eight hundred and forty-two
Roman numeralsNot defined above 3,999
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Also reads as
#668844 (colour)
- #668844
- Green
- Dark
- Nearest: Dark olivegreen
#668844 is a green with RGB values 102, 136, 68 and HSL 90°, 33%, 40%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Dark olivegreen.
Colour values
#668844#668844
HEX#668844
HEX (short)#684
RGBrgb(102, 136, 68)
RGB (0–1)0.4, 0.5333, 0.2667
RGB percentages40%, 53.3%, 26.7%
HSLhsl(90, 33.3%, 40%)
HSV / HSBhsv(90, 50%, 53.3%)
CMYK25%, 0%, 50%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,719,556
CSS custom property--colour: #668844;
Brightness & contrast
Relative luminance0.2085WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.17:1
Contrast with white4.06:1WCAG normal text: Fail
Contrast with black5.17:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#9977BB
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.06:1WCAG large text: AA
Contrast with black, large text5.17:1WCAG large text: AAA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#664488
Analogous#888844, #448844
Triadic#446688, #884466
Split complementary#444488, #884488
Tetradic#448888, #664488, #884444
Tints, shades & saturation
Channel breakdown
R102
G136
B68
Red102 (40%)
Green136 (53.3%)
Blue68 (26.7%)
Hue90°
Saturation (HSL)33.33%
Lightness40%
Dominant channelGreen
Hex per channelR 66 · G 88 · B 44
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Harmonies
Similar named colours
Nerdulate something else
Nothing in mind? Surprise me · today’s page