Number
137,243
- Positive
- Odd
- Composite
- 6 digits
137,243 is an odd 6-digit integer and a composite number. It has 4 divisors and a digital root of 2.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value137,243
Digit count6
Digit sum20
Digital root2repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation71 × 1,933
Distinct prime factors271, 1,933
Number of divisors4
Sum of divisors σ(n)139,248
Aliquot sum2,005sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)135,240integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 71, 1,933, 137,2434 in total
Arithmetic
Representations
Decimal137,243
Binary10000110000001101118 bits
Octal414033
Hexadecimal2181B
Base 362XWB
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsone hundred and thirty-seven thousand, two hundred and forty-three
Ordinalone hundred and thirty-seven thousand, two hundred and forty-third
Scientific notation1.37243 × 10^5
Engineering notation137.243 × 10^3
Nearest landmarks
Powers & multiples
137,243 to the power 218,835,641,049
137,243 to the power 32,585,059,884,487,907
137,243 to the power 4354,781,373,726,773,820,401
137,243 to the power 548,691,260,074,383,619,433,294,443
First ten multiples137,243, 274,486, 411,729, 548,972, 686,215, 823,458, 960,701, 1,097,944, 1,235,187, 1,372,430
Powers of twoBetween 2^17 (131,072) and 2^18 (262,144)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 2
Divisible by 4No, remainder 3
Divisible by 5No, remainder 3
Divisible by 6No, remainder 5
Divisible by 7No, remainder 1
Divisible by 8No, remainder 3
Divisible by 9No, remainder 2
Divisible by 10No, remainder 3
Divisible by 11No, remainder 7
Divisible by 12No, remainder 11
Divisible by 100No, remainder 43
Collatz (3n + 1) trajectory
Steps to reach 187the total stopping time
Highest value reached5,008,22836× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps137,243 → 411,730 → 205,865 → 617,596 → 308,798 → 154,399 → 463,198 → 231,599 → 694,798 → 347,399 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage13,724,300%
137,243% as a decimal1,372.43
137,243% of 100137,243
137,243% of 1,0001,372,430
As a fraction of 100137,243/100
Read another way
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Derived from 137,243
Also reads as
#137243 (colour)
- #137243
- Cyan
- Dark
- Nearest: Sea green
#137243 is a cyan with RGB values 19, 114, 67 and HSL 150°, 71%, 26%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Sea green.
Colour values
#137243#137243
HEX#137243
RGBrgb(19, 114, 67)
RGB (0–1)0.0745, 0.4471, 0.2627
RGB percentages7.5%, 44.7%, 26.3%
HSLhsl(150.3, 71.4%, 26.1%)
HSV / HSBhsv(150.3, 83.3%, 44.7%)
CMYK83.3%, 0%, 41.2%, 55.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,274,435
CSS custom property--colour: #137243;
Brightness & contrast
Relative luminance0.12578WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.97:1
Contrast with white5.97:1WCAG normal text: AA
Contrast with black3.52:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#EC8DBC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.97:1WCAG large text: AAA
Contrast with black, large text3.52:1WCAG large text: AA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#721342
Analogous#137213, #137272
Triadic#431372, #724313
Split complementary#721372, #721313
Tetradic#131372, #721342, #727213
Tints, shades & saturation
Channel breakdown
R19
G114
B67
Red19 (7.5%)
Green114 (44.7%)
Blue67 (26.3%)
Hue150.32°
Saturation (HSL)71.43%
Lightness26.08%
Dominant channelGreen
Hex per channelR 13 · G 72 · B 43
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Harmonies
Similar named colours
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