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Number

201,001

  • Positive
  • Odd
  • Composite
  • 6 digits

201,001 is an odd 6-digit integer and a composite number. It has 8 divisors and a digital root of 4.

Number properties

ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value201,001
Digit count6
Digit sum4
Digital root4repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation19 × 71 × 149
Distinct prime factors319, 71, 149
Number of divisors8
Sum of divisors σ(n)216,000
Aliquot sum14,999sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)186,480integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 19, 71, 149, 1,349, 2,831, 10,579, 201,0018 in total

Arithmetic

Previous number201,000
Next number201,002
Double402,002
Half100,500.5
Square40,401,402,001
Cube8,120,722,203,603,001
Square root448.331350677≈irrational, shown to 9 decimal places
Cube root58.57775717≈
Negation-201,001
Reciprocal0.0000049751≈

Representations

Decimal201,001
Binary11000100010010100118 bits
Octal610451
Hexadecimal31129
Base 364B3D
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordstwo hundred and one thousand and one
Ordinaltwo hundred and one thousand and first
Scientific notation2.01001 × 10^5
Engineering notation201.001 × 10^3

Nearest landmarks

Next prime201,007+6
Previous prime200,989−12
Distance to nearest prime6
Nearest square below200,704
Nearest square above201,601

Powers & multiples

201,001 to the power 240,401,402,001
201,001 to the power 38,120,722,203,603,001
201,001 to the power 41,632,273,283,646,406,804,001
201,001 to the power 5328,088,562,286,211,414,011,005,001
First ten multiples201,001, 402,002, 603,003, 804,004, 1,005,005, 1,206,006, 1,407,007, 1,608,008, 1,809,009, 2,010,010
Powers of twoBetween 2^17 (131,072) and 2^18 (262,144)

Divisibility tests

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

Collatz (3n + 1) trajectory

Steps to reach 1173the total stopping time
Highest value reached2,289,54411× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps201,001 → 603,004 → 301,502 → 150,751 → 452,254 → 226,127 → 678,382 → 339,191 → 1,017,574 → 508,787 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage20,100,100%
201,001% as a decimal2,010.01
201,001% of 100201,001
201,001% of 1,0002,010,010
As a fraction of 100201,001/100

Read another way

As seconds2 days, 7 hours and 50 minutes
As bytes196.29 KiB
As a 24-bit colour#031129

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Neighbouring numbers

Nearby primes

Also reads as

#201001 (colour)

  • #201001
  • Orange
  • Dark
  • Nearest: Black

#201001 is a orange with RGB values 32, 16, 1 and HSL 29°, 94%, 6%. It is a dark colour, so white text on it reaches 18.5:1 contrast (AAA for normal text). The nearest named colour is Black.

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Colour values

#201001#201001
HEX#201001
RGBrgb(32, 16, 1)
RGB (0–1)0.1255, 0.0627, 0.0039
RGB percentages12.5%, 6.3%, 0.4%
HSLhsl(29, 93.9%, 6.5%)
HSV / HSBhsv(29, 96.9%, 12.5%)
CMYK0%, 50%, 96.9%, 87.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,101,249
CSS custom property--colour: #201001;

Brightness & contrast

Relative luminance0.0068WCAG 2.x, 0 is black and 1 is white
Perceived brightness21.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.49:1
Contrast with white18.49:1WCAG normal text: AAA
Contrast with black1.14:1WCAG normal text: Fail
Greyscale equivalent#121212
Inverted#DFEFFE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#151100no red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#191501no green cones; the most common form, about 1% of men; ΔE 7.2 from the original
Tritanopia#240C0Cno blue cones; rare, and affects men and women equally; ΔE 7.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.49:1WCAG large text: AAA
Contrast with black, large text1.14:1WCAG large text: Fail

Named colours

Black · ΔE 12.2Dark slate grey · ΔE 33.1Dim grey · ΔE 39.7Gray · ΔE 48.6Dark olivegreen · ΔE 48.8Saddle brown · ΔE 49.4
Nearest named CSS colourBlack (#000000)ΔE 12.24, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#011120
Analogous#200102, #201F01
Triadic#012010, #100120
Split complementary#01201F, #010220
Tetradic#022001, #011120, #1F0120

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E67307
Lighter +30%#B45A06
Lighter +20%#834104
Lighter +10%#512903
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#211000
Less saturated −25%#1C1005

Channel breakdown

R32
G16
B1
Red32 (12.5%)
Green16 (6.3%)
Blue1 (0.4%)
Hue29.03°
Saturation (HSL)93.94%
Lightness6.47%
Dominant channelRed
Hex per channelR 20 · G 10 · B 01

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Every value on this page was computed from “201001” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.