Number
122
- Positive
- Even
- Composite
- 3 digits
122 is an even 3-digit integer and a composite number. It has 4 divisors and a digital root of 5.
The canonical address for this page is /122.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value122
Digit count3
Digit sum5
Digital root5repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 61
Distinct prime factors22, 61
Number of divisors4
Sum of divisors σ(n)186
Aliquot sum64sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)60integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 2, 61, 1224 in total
Arithmetic
Representations
Decimal122
Binary11110107 bits
Octal172
Hexadecimal7A
Base 363E
Roman numeralCXXII
In wordsone hundred and twenty-two
Ordinalone hundred and twenty-second
Scientific notation1.22 × 10^2
Engineering notation122
Nearest landmarks
Powers & multiples
122 to the power 214,884
122 to the power 31,815,848
122 to the power 4221,533,456
122 to the power 527,027,081,632
First ten multiples122, 244, 366, 488, 610, 732, 854, 976, 1,098, 1,220
Powers of twoBetween 2^6 (64) and 2^7 (128)
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 5
Divisible by 10No, remainder 2
Divisible by 11No, remainder 1
Divisible by 12No, remainder 2
Divisible by 100No, remainder 22
Collatz (3n + 1) trajectory
Steps to reach 120the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps122 → 61 → 184 → 92 → 46 → 23 → 70 → 35 → 106 → 53 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage12,200%
122% as a decimal1.22
122% of 100122
122% of 1,0001,220
As a fraction of 100122/100
Read another way
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Derived from 122
Other readings
Also reads as
#000122 (colour)
- #000122
- Blue
- Dark
- Nearest: Black
#000122 is a blue with RGB values 0, 1, 34 and HSL 238°, 100%, 7%. It is a dark colour, so white text on it reaches 20.4:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#000122#000122
HEX#000122
RGBrgb(0, 1, 34)
RGB (0–1)0, 0.0039, 0.1333
RGB percentages0%, 0.4%, 13.3%
HSLhsl(238.2, 100%, 6.7%)
HSV / HSBhsv(238.2, 100%, 13.3%)
CMYK100%, 97.1%, 0%, 86.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer290
CSS custom property--colour: #000122;
Brightness & contrast
Relative luminance0.00137WCAG 2.x, 0 is black and 1 is white
Perceived brightness11.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 20.44:1
Contrast with white20.44:1WCAG normal text: AAA
Contrast with black1.03:1WCAG normal text: Fail
Greyscale equivalent#030303
Inverted#FFFEDD
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text20.44:1WCAG large text: AAA
Contrast with black, large text1.03:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#222100
Analogous#001222, #100022
Triadic#220001, #012200
Split complementary#221000, #122200
Tetradic#220012, #222100, #002210
Tints, shades & saturation
Channel breakdown
R0
G1
B34
Red0 (0%)
Green1 (0.4%)
Blue34 (13.3%)
Hue238.24°
Saturation (HSL)100%
Lightness6.67%
Dominant channelBlue
Hex per channelR 00 · G 01 · B 22
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Harmonies
Similar named colours
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