Recognised as Number
801,442
- Positive
- Even
- Composite
- 6 digits
801,442 is an even 6-digit integer and a composite number. It has 4 divisors and a digital root of 1.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value801,442
Digit count6
Digit sum19
Digit product0zero, because one of the digits is zero
Multiplicative persistence1times the digit product can be taken before one digit is left
Digital root1repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 400,721
Distinct prime factors22, 400,721
Number of divisors4
Sum of divisors σ(n)1,202,166
Aliquot sum400,724sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)400,720integers below n that share no factor with it
Carmichael function λ(n)400,720the smallest exponent with aˣ ≡ 1 for every unit coprime to n
Möbius function μ(n)+12 distinct prime factors, an even number of them
SquarefreeYesno repeated prime factor
All divisors1, 2, 400,721, 801,4424 in total
Arithmetic
Representations
Decimal801,442
Binary1100001110101010001020 bits
Octal3035242
HexadecimalC3AA2
Base 36H6EA
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordseight hundred and one thousand, four hundred and forty-two
Ordinaleight hundred and one thousand, four hundred and forty-second
Scientific notation8.01442 × 10^5
Engineering notation801.442 × 10^3
In other bases
Ternary1111201101001base 3; the most digit-efficient integer base after e: 13 digits
Quinary201121232base 5; one hand: 9 digits
Septenary6545365base 7: 7 digits
Nonary1451331base 9; each digit is two ternary digits: 7 digits
Duodecimal32796abase 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 6 digits
Vigesimal503c2base 20; hands and feet, and the Mayan and Yoruba systems: 5 digits
Sexagesimal3:42:37:22base 60; Babylonian, and still how an hour and a circle are divided: 4 digits
Balanced ternary1TTTTT01101001digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary111000100111111100110base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
00000000000011000011101010100010
Bit length20 bitsto write the magnitude
Set bits9the population count, or Hamming weight
Zero bits11within that length
Bit parityodd9 set bits, so odd; not the same as the number itself being even
Highest set bitbit 19worth 524,288
Lowest set bitbit 11 trailing zero
Power of twoNo
Bytes30c 3a a2
Gray code10100010011111110011n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
32-bit00000000000011000011101010100010
64-bit0000000000000000000000000000000000000000000011000011101010100010
One's complement11111111111100111100010101011101at 32 bits, every bit flipped
Bits reversed01000101010111000011000000000000at 32 bits
Rotated left by 100000000000110000111010101000100at 32 bits, wrapping
Shifted left by 1110000111010101000100= 1,602,884, no wrap
Shifted right by 11100001110101010001= 400,721, discarding the low bit
These bits as a double3.95964959 × 10^-318≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
801,442 to the power 2642,309,279,364
801,442 to the power 3514,773,633,472,042,888
801,442 to the power 4412,561,210,357,100,996,244,496
801,442 to the power 5330,643,881,551,015,736,632,181,363,232
First ten multiples801,442, 1,602,884, 2,404,326, 3,205,768, 4,007,210, 4,808,652, 5,610,094, 6,411,536, 7,212,978, 8,014,420
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 1
Divisible by 4No, remainder 2
Divisible by 5No, remainder 2
Divisible by 6No, remainder 4
Divisible by 7No, remainder 5
Divisible by 8No, remainder 2
Divisible by 9No, remainder 1
Divisible by 10No, remainder 2
Divisible by 11No, remainder 4
Divisible by 12No, remainder 10
Divisible by 100No, remainder 42
Collatz (3n + 1) trajectory
Steps to reach 1144the total stopping time
Highest value reached2,567,5363× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps801,442 → 400,721 → 1,202,164 → 601,082 → 300,541 → 901,624 → 450,812 → 225,406 → 112,703 → 338,110 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage80,144,200%
801,442% as a decimal8,014.42
801,442% of 100801,442
801,442% of 1,0008,014,420
As a fraction of 100801,442/100
Read another way
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Derived from 801,442
Also reads as
#801442 (colour)
- #801442
- Red
- Dark
- Nearest: Brown
#801442 is a red with RGB values 128, 20, 66 and HSL 334°, 73%, 29%. It is a dark colour, so white text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Brown.
Colour values
#801442#801442
HEX#801442
RGBrgb(128, 20, 66)
RGB (0–1)0.502, 0.0784, 0.2588
RGB percentages50.2%, 7.8%, 25.9%
HSLhsl(334.4, 73%, 29%)
HSV / HSBhsv(334.4, 84.4%, 50.2%)
CMYK0%, 84.4%, 48.4%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,393,794
CSS custom property--colour: #801442;
Brightness & contrast
Relative luminance0.05483WCAG 2.x, 0 is black and 1 is white
Perceived brightness75 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.02:1
Contrast with white10.02:1WCAG normal text: AAA
Contrast with black2.1:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#7FEBBD
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.02:1WCAG large text: AAA
Contrast with black, large text2.1:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#148052
Analogous#801478, #801C14
Triadic#428014, #144280
Split complementary#14801C, #147880
Tetradic#788014, #148052, #1C1480
Tints, shades & saturation
Channel breakdown
R128
G20
B66
Red128 (50.2%)
Green20 (7.8%)
Blue66 (25.9%)
Hue334.44°
Saturation (HSL)72.97%
Lightness29.02%
Dominant channelRed
Hex per channelR 80 · G 14 · B 42
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Harmonies
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