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Number

427

  • Positive
  • Odd
  • Composite
  • 3 digits

427 is an odd 3-digit integer and a composite number. It has 4 divisors and a digital root of 4.

The canonical address for this page is /427.

Number properties

ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value427
Digit count3
Digit sum13
Digital root4repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation7 × 61
Distinct prime factors27, 61
Number of divisors4
Sum of divisors σ(n)496
Aliquot sum69sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)360integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 7, 61, 4274 in total

Arithmetic

Previous number426
Next number428
Double854
Half213.5
Square182,329
Cube77,854,483
Square root20.66397832≈irrational, shown to 9 decimal places
Cube root7.530248212≈
Negation-427
Reciprocal0.0023419204≈
427 factorial2906347176960734841102915400715931684676… (940 digits)

Representations

Decimal427
Binary1101010119 bits
Octal653
Hexadecimal1AB
Base 36BV
Roman numeralCDXXVII
In wordsfour hundred and twenty-seven
Ordinalfour hundred and twenty-seventh
Scientific notation4.27 × 10^2
Engineering notation427

Nearest landmarks

Next prime431+4
Previous prime421−6
Distance to nearest prime4
Nearest square below400
Nearest square above441

Powers & multiples

427 to the power 2182,329
427 to the power 377,854,483
427 to the power 433,243,864,241
427 to the power 514,195,130,030,907
First ten multiples427, 854, 1,281, 1,708, 2,135, 2,562, 2,989, 3,416, 3,843, 4,270
Powers of twoBetween 2^8 (256) and 2^9 (512)

Divisibility tests

Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 3
Divisible by 5No, remainder 2
Divisible by 6No, remainder 1
Divisible by 7Yes
Divisible by 8No, remainder 3
Divisible by 9No, remainder 4
Divisible by 10No, remainder 7
Divisible by 11No, remainder 9
Divisible by 12No, remainder 7
Divisible by 100No, remainder 27

Collatz (3n + 1) trajectory

Steps to reach 153the total stopping time
Highest value reached2,7526× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps427 → 1,282 → 641 → 1,924 → 962 → 481 → 1,444 → 722 → 361 → 1,084 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage42,700%
427% as a decimal4.27
427% of 100427
427% of 1,0004,270
As a fraction of 100427/100

Read another way

As seconds7 minutes and 7 seconds
As bytes427 B
As a 24-bit colour#0001AB

Keep nerding

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Neighbouring numbers

Nearby primes

Also reads as

#000427 (colour)

  • #000427
  • Blue
  • Dark
  • Nearest: Black

#000427 is a blue with RGB values 0, 4, 39 and HSL 234°, 100%, 8%. It is a dark colour, so white text on it reaches 20.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Open this reading on its own page →

Colour values

#000427#000427
HEX#000427
RGBrgb(0, 4, 39)
RGB (0–1)0, 0.0157, 0.1529
RGB percentages0%, 1.6%, 15.3%
HSLhsl(233.8, 100%, 7.6%)
HSV / HSBhsv(233.8, 100%, 15.3%)
CMYK100%, 89.7%, 0%, 84.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,063
CSS custom property--colour: #000427;

Brightness & contrast

Relative luminance0.00233WCAG 2.x, 0 is black and 1 is white
Perceived brightness13.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 20.06:1
Contrast with white20.06:1WCAG normal text: AAA
Contrast with black1.05:1WCAG normal text: Fail
Greyscale equivalent#060606
Inverted#FFFBD8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000A28no red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#000626no green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#000D14no blue cones; rare, and affects men and women equally; ΔE 18.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text20.06:1WCAG large text: AAA
Contrast with black, large text1.05:1WCAG large text: Fail

Named colours

Black · ΔE 22.5Dark slate grey · ΔE 39.1Midnight blue · ΔE 39.8Dark slateblue · ΔE 40.1Dim grey · ΔE 47.9Slate grey · ΔE 52.7
Nearest named CSS colourBlack (#000000)ΔE 22.5, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#272300
Analogous#001827, #0F0027
Triadic#270004, #042700
Split complementary#270F00, #182700
Tetradic#270018, #272300, #00270F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#0019F3
Lighter +30%#0014C0
Lighter +20%#000E8D
Lighter +10%#00095A
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000427
Less saturated −25%#050822

Channel breakdown

R0
G4
B39
Red0 (0%)
Green4 (1.6%)
Blue39 (15.3%)
Hue233.85°
Saturation (HSL)100%
Lightness7.65%
Dominant channelBlue
Hex per channelR 00 · G 04 · B 27

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Every value on this page was computed from “000427” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.

This page is marked noindex: duplicate of /427.