Live analysis

71,142

71,142 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

71,142 (seventy-one thousand one hundred forty-two) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2 × 3 × 71 × 167. Its proper divisors sum to 74,010, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x115E6.

Abundant Number Arithmetic Number Cube-Free Odious Number Recamán's Sequence Semiperfect Number Squarefree

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

71,130 71,131 71,132 71,133 71,134 71,135 71,136 71,137 71,138 71,139 71,140 71,141 71,142 71,143 71,144 71,145 71,146 71,147 71,148 71,149 71,150 71,151 71,152 71,153 71,154

less more

Properties

Parity: Even
Digit count: 5
Digit sum: 15
Digit product: 56
Digital root: 6
Palindrome: No
Bit width: 17 bits
Reversed: 24,117
Recamán's sequence: a(129,315) = 71,142
Square (n²): 5,061,184,164
Cube (n³): 360,062,763,795,288
Divisor count: 16
σ(n) — sum of divisors: 145,152
φ(n) — Euler's totient: 23,240
Sum of prime factors: 243

Primality

Prime factorization: 2 × 3 × 71 × 167

Nearest primes: 71,129 (−13) · 71,143 (+1)

Divisors & multiples

All divisors (16)

1 · 2 · 3 · 6 · 71 · 142 · 167 · 213 · 334 · 426 · 501 · 1002 · 11857 · 23714 · 35571 (half) · 71142

Aliquot sum (sum of proper divisors): 74,010

Factor pairs (a × b = 71,142)

1 × 71142

2 × 35571

3 × 23714

6 × 11857

71 × 1002

142 × 501

167 × 426

213 × 334

First multiples

71,142 · 142,284 (double) · 213,426 · 284,568 · 355,710 · 426,852 · 497,994 · 569,136 · 640,278 · 711,420

Sums & aliquot sequence

As consecutive integers: 23,713 + 23,714 + 23,715 17,784 + 17,785 + 17,786 + 17,787 5,923 + 5,924 + … + 5,934 967 + 968 + … + 1,037

Aliquot sequence: 71,142 → 74,010 → 103,686 → 122,682 → 172,230 → 241,194 → 249,846 → 249,858 → 385,662 → 478,338 → 635,214 → 690,738 → 690,750 → 1,183,122 → 1,380,348 → 2,198,612 → 1,945,024 — unresolved within range

Continued fraction of √n

√71,142 = [266; (1, 2, 1, 1, 1, 2, 2, 3, 22, 1, 9, 9, 3, 1, 6, 1, 3, 9, 9, 1, 22, 3, 2, 2, …)]

Period length 30 — the block in parentheses repeats forever.

Representations

In words: seventy-one thousand one hundred forty-two
Ordinal: 71142nd
Binary: 10001010111100110
Octal: 212746
Hexadecimal: 0x115E6
Base64: ARXm
One's complement: 4,294,896,153 (32-bit)
Scientific notation: 7.1142 × 10⁴
As a duration: 71,142 s = 19 hours, 45 minutes, 42 seconds

In other bases

ternary (3) 10121120220

quaternary (4) 101113212

quinary (5) 4234032

senary (6) 1305210

septenary (7) 414261

nonary (9) 117526

undecimal (11) 494a5

duodecimal (12) 35206

tridecimal (13) 264c6

tetradecimal (14) 1bcd8

pentadecimal (15) 1612c

As an angle

71,142° = 197 × 360° + 222°

222° ≈ 3.875 rad

Compass bearing: SW (southwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
Egyptian hieroglyphic: 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
Greek (Milesian): ͵οαρμβʹ
Mayan (base 20): 𝋨·𝋱·𝋱·𝋢
Chinese: 七萬一千一百四十二
Chinese (financial): 柒萬壹仟壹佰肆拾貳

In other modern scripts

Eastern Arabic ٧١١٤٢ Devanagari ७११४२ Bengali ৭১১৪২ Tamil ௭௧௧௪௨ Thai ๗๑๑๔๒ Tibetan ༧༡༡༤༢ Khmer ៧១១៤២ Lao ໗໑໑໔໒ Burmese ၇၁၁၄၂

Digit at this position in famous constants

π — Pi (π): Digit 71,142 = 9
e — Euler's number (e): Digit 71,142 = 8
φ — Golden ratio (φ): Digit 71,142 = 7
√2 — Pythagoras's (√2): Digit 71,142 = 0
ln 2 — Natural log of 2: Digit 71,142 = 6
γ — Euler-Mascheroni (γ): Digit 71,142 = 1

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 71142, here are decompositions:

13 + 71129 = 71142
23 + 71119 = 71142
53 + 71089 = 71142
61 + 71081 = 71142
73 + 71069 = 71142
83 + 71059 = 71142
103 + 71039 = 71142
131 + 71011 = 71142

Showing the first eight; more decompositions exist.

Hex color

#0115E6

RGB(1, 21, 230)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.21.230.

Address: 0.1.21.230
Class: reserved
IPv4-mapped IPv6: ::ffff:0.1.21.230

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 71142 first appears in π at position 120,559 of the decimal expansion (the 120,559ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 71142 on Pi Search ↗