Number

421,001

Positive
Odd
Composite
6 digits

421,001 is an odd 6-digit integer and a composite number. It has 8 divisors and a digital root of 8.

Number properties

ParityOddnot divisible by 2

SignPositive

PrimalityComposite

Absolute value421,001

Digit count6

Digit sum8

Digital root8repeated digit sum

PalindromicNoreads differently backwards

Happy numberNosquared-digit sums reach 1

Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation7 × 137 × 439

Distinct prime factors37, 137, 439

Number of divisors8

Sum of divisors σ(n)485,760

Aliquot sum64,759sum of the proper divisors

ClassificationDeficientthe aliquot sum is less than the number

Euler's totient φ(n)357,408integers below n that share no factor with it

SquarefreeYesno repeated prime factor

All divisors1, 7, 137, 439, 959, 3,073, 60,143, 421,0018 in total

Arithmetic

Previous number421,000

Next number421,002

Double842,002

Half210,500.5

Square177,241,842,001

Cube74,618,992,724,263,001

Square root648.8458985≈irrational, shown to 9 decimal places

Cube root74.9481716≈

Negation-421,001

Reciprocal0.0000023753≈

Representations

Decimal421,001

Binary110011011001000100119 bits

Octal1466211

Hexadecimal66C89

Base 3690UH

Roman numeralNot defined above 3,999there is no agreed standard notation

In wordsfour hundred and twenty-one thousand and one

Ordinalfour hundred and twenty-one thousand and first

Scientific notation4.21001 × 10^5

Engineering notation421.001 × 10^3

Nearest landmarks

Next prime421,009+8

Previous prime420,997−4

Distance to nearest prime4

Nearest square below419,904

Nearest square above421,201

Powers & multiples

421,001 to the power 2177,241,842,001

421,001 to the power 374,618,992,724,263,001

421,001 to the power 431,414,670,555,907,447,684,001

421,001 to the power 513,225,607,718,707,591,382,412,105,001

First ten multiples421,001, 842,002, 1,263,003, 1,684,004, 2,105,005, 2,526,006, 2,947,007, 3,368,008, 3,789,009, 4,210,010

Powers of twoBetween 2^18 (262,144) and 2^19 (524,288)

Divisibility tests

Divisible by 2No, remainder 1

Divisible by 3No, remainder 2

Divisible by 4No, remainder 1

Divisible by 5No, remainder 1

Divisible by 6No, remainder 5

Divisible by 7Yes

Divisible by 8No, remainder 1

Divisible by 9No, remainder 8

Divisible by 10No, remainder 1

Divisible by 11No, remainder 9

Divisible by 12No, remainder 5

Divisible by 100No, remainder 1

Collatz (3n + 1) trajectory

Steps to reach 1104the total stopping time

Highest value reached8,092,38419× the starting value

Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven

First steps421,001 → 1,263,004 → 631,502 → 315,751 → 947,254 → 473,627 → 1,420,882 → 710,441 → 2,131,324 → 1,065,662 → …

Last steps… → 32 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage42,100,100%

421,001% as a decimal4,210.01

421,001% of 100421,001

421,001% of 1,0004,210,010

As a fraction of 100421,001/100

Read another way

As seconds4 days, 20 hours and 56 minutes

As bytes411.134 KiB

As a 24-bit colour#066C89

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Neighbouring numbers

Derived from 421,001

Nearby primes

#421001 (colour)

#421001
Red
Dark
Nearest: Black

#421001 is a red with RGB values 66, 16, 1 and HSL 14°, 97%, 13%. It is a dark colour, so white text on it reaches 16.1:1 contrast (AAA for normal text). The nearest named colour is Black.

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Colour values

#421001#421001

HEX#421001

RGBrgb(66, 16, 1)

RGB (0–1)0.2588, 0.0627, 0.0039

RGB percentages25.9%, 6.3%, 0.4%

HSLhsl(13.8, 97%, 13.1%)

HSV / HSBhsv(13.8, 98.5%, 25.9%)

CMYK0%, 75.8%, 98.5%, 74.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,329,473

CSS custom property--colour: #421001;

Brightness & contrast

Relative luminance0.01531WCAG 2.x, 0 is black and 1 is white

Perceived brightness38.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.08:1

Contrast with white16.08:1WCAG normal text: AAA

Contrast with black1.31:1WCAG normal text: Fail

Greyscale equivalent#1A1A1A

Inverted#BDEFFE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1F1A00no red cones; affects about 1% of men; ΔE 25.8 from the original

Deuteranopia#2B2500no green cones; the most common form, about 1% of men; ΔE 25.7 from the original

Tritanopia#4A020Dno blue cones; rare, and affects men and women equally; ΔE 10.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.08:1WCAG large text: AAA

Contrast with black, large text1.31:1WCAG large text: Fail

Named colours

Black · ΔE 32.8 Saddle brown · ΔE 33 Maroon · ΔE 33.6 Sienna · ΔE 35.6 Brown · ΔE 37.9 Dark red · ΔE 38.5

Nearest named CSS colourBlack (#000000)ΔE 32.83, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#013342

Analogous#420112, #423001

Triadic#014210, #100142

Split complementary#014230, #011342

Tetradic#134201, #013342, #300142

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FB4914

Lighter +30%#D93503

Lighter +20%#A62803

Lighter +10%#741C02

Darker −10%#100400

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#430F00

Less saturated −25%#3A1509

Channel breakdown

R66

G16

Red66 (25.9%)

Green16 (6.3%)

Blue1 (0.4%)

Hue13.85°

Saturation (HSL)97.01%

Lightness13.14%

Dominant channelRed

Hex per channelR 42 · G 10 · B 01

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Every link below is a page Nerdulator can generate from what it already knows about this value.

421,001

Number properties

Factors & divisors

Arithmetic

Representations

Nearest landmarks

Powers & multiples

Divisibility tests

Collatz (3n + 1) trajectory

As a percentage & fraction

Read another way

Keep nerding

Neighbouring numbers

Derived from 421,001

Nearby primes

Other readings

#421001 (colour)

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

Nerdulate something else