Recognised as Number
742,513
- Positive
- Odd
- Prime
- 6 digits
742,513 is an odd 6-digit integer and a prime number. It has 2 divisors and a digital root of 4.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value742,513
Digit count6
Digit sum22
Digit product840
Multiplicative persistence2times the digit product can be taken before one digit is left
Digital root4repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation742,513
Distinct prime factors1742,513
Number of divisors2
Sum of divisors σ(n)742,514
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)742,512integers below n that share no factor with it
Carmichael function λ(n)742,512the smallest exponent with aˣ ≡ 1 for every unit coprime to n
Möbius function μ(n)−11 distinct prime factor, an odd number of them
SquarefreeYesno repeated prime factor
All divisors1, 742,5132 in total
Arithmetic
Representations
Decimal742,513
Binary1011010101000111000120 bits
Octal2652161
HexadecimalB5471
Base 36FWXD
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsseven hundred and forty-two thousand, five hundred and thirteen
Ordinalseven hundred and forty-two thousand, five hundred and thirteenth
Scientific notation7.42513 × 10^5
Engineering notation742.513 × 10^3
In other bases
Ternary1101201112111base 3; the most digit-efficient integer base after e: 13 digits
Quinary142230023base 5; one hand: 9 digits
Septenary6211522base 7: 7 digits
Nonary1351474base 9; each digit is two ternary digits: 7 digits
Duodecimal2b9841base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 6 digits
Vigesimal4cg5dbase 20; hands and feet, and the Mayan and Yoruba systems: 5 digits
Sexagesimal3:26:15:13base 60; Babylonian, and still how an hour and a circle are divided: 4 digits
Balanced ternary111TT1TTTT111digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary111110101010110110001base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
00000000000010110101010001110001
Bit length20 bitsto write the magnitude
Set bits10the population count, or Hamming weight
Zero bits10within that length
Bit parityeven10 set bits, so even; not the same as the number itself being odd
Highest set bitbit 19worth 524,288
Lowest set bitbit 00 trailing zeros
Power of twoNo
Bytes30b 54 71
Gray code11101111111001001001n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
32-bit00000000000010110101010001110001
64-bit0000000000000000000000000000000000000000000010110101010001110001
One's complement11111111111101001010101110001110at 32 bits, every bit flipped
Bits reversed10001110001010101101000000000000at 32 bits
Rotated left by 100000000000101101010100011100010at 32 bits, wrapping
Shifted left by 1101101010100011100010= 1,485,026, no wrap
Shifted right by 11011010101000111000= 371,256, discarding the low bit
These bits as a double3.66850165 × 10^-318≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
742,513 to the power 2551,325,555,169
742,513 to the power 3409,366,391,945,199,697
742,513 to the power 4303,959,867,782,406,062,618,561
742,513 to the power 5225,694,153,306,717,672,773,095,583,793
First ten multiples742,513, 1,485,026, 2,227,539, 2,970,052, 3,712,565, 4,455,078, 5,197,591, 5,940,104, 6,682,617, 7,425,130
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 1
Divisible by 5No, remainder 3
Divisible by 6No, remainder 1
Divisible by 7No, remainder 2
Divisible by 8No, remainder 1
Divisible by 9No, remainder 4
Divisible by 10No, remainder 3
Divisible by 11No, remainder 2
Divisible by 12No, remainder 1
Divisible by 100No, remainder 13
Collatz (3n + 1) trajectory
Steps to reach 187the total stopping time
Highest value reached2,227,5403× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps742,513 → 2,227,540 → 1,113,770 → 556,885 → 1,670,656 → 835,328 → 417,664 → 208,832 → 104,416 → 52,208 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage74,251,300%
742,513% as a decimal7,425.13
742,513% of 100742,513
742,513% of 1,0007,425,130
As a fraction of 100742,513/100
Read another way
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Derived from 742,513
Also reads as
#742513 (colour)
- #742513
- Red
- Dark
- Nearest: Maroon
#742513 is a red with RGB values 116, 37, 19 and HSL 11°, 72%, 26%. It is a dark colour, so white text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Maroon.
Colour values
#742513#742513
HEX#742513
RGBrgb(116, 37, 19)
RGB (0–1)0.4549, 0.1451, 0.0745
RGB percentages45.5%, 14.5%, 7.5%
HSLhsl(11.1, 71.9%, 26.5%)
HSV / HSBhsv(11.1, 83.6%, 45.5%)
CMYK0%, 68.1%, 83.6%, 54.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,611,667
CSS custom property--colour: #742513;
Brightness & contrast
Relative luminance0.05083WCAG 2.x, 0 is black and 1 is white
Perceived brightness69.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.41:1
Contrast with white10.41:1WCAG normal text: AAA
Contrast with black2.02:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#8BDAEC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.41:1WCAG large text: AAA
Contrast with black, large text2.02:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#136274
Analogous#741331, #745513
Triadic#137425, #251374
Split complementary#137455, #133274
Tetradic#327413, #136274, #551374
Tints, shades & saturation
Channel breakdown
R116
G37
B19
Red116 (45.5%)
Green37 (14.5%)
Blue19 (7.5%)
Hue11.13°
Saturation (HSL)71.85%
Lightness26.47%
Dominant channelRed
Hex per channelR 74 · G 25 · B 13
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