Live analysis

142,842

142,842 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.).

142,842 (one hundred forty-two thousand eight hundred forty-two) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 3 × 7 × 19 × 179. Its proper divisors sum to 202,758, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22DFA.

Abundant Number Arithmetic Number Cube-Free Harshad / Niven Odious Number Pernicious Number Practical Number Recamán's Sequence Semiperfect Number Squarefree

Interestingness

★ ★ ★ ★ ☆

7 notable facts · grade B

142,830 142,831 142,832 142,833 142,834 142,835 142,836 142,837 142,838 142,839 142,840 142,841 142,842 142,843 142,844 142,845 142,846 142,847 142,848 142,849 142,850 142,851 142,852 142,853 142,854

less more

Properties

Parity: Even
Digit count: 6
Digit sum: 21
Digit product: 512
Digital root: 3
Palindrome: No
Bit width: 18 bits
Reversed: 248,241
Recamán's sequence: a(222,732) = 142,842
Square (n²): 20,403,836,964
Cube (n³): 2,914,524,879,611,688
Divisor count: 32
σ(n) — sum of divisors: 345,600
φ(n) — Euler's totient: 38,448
Sum of prime factors: 210

Primality

Prime factorization: 2 × 3 × 7 × 19 × 179

Nearest primes: 142,841 (−1) · 142,867 (+25)

Divisors & multiples

All divisors (32)

1 · 2 · 3 · 6 · 7 · 14 · 19 · 21 · 38 · 42 · 57 · 114 · 133 · 179 · 266 · 358 · 399 · 537 · 798 · 1074 · 1253 · 2506 · 3401 · 3759 · 6802 · 7518 · 10203 · 20406 · 23807 · 47614 · 71421 (half) · 142842

Aliquot sum (sum of proper divisors): 202,758

Factor pairs (a × b = 142,842)

1 × 142842

2 × 71421

3 × 47614

6 × 23807

7 × 20406

14 × 10203

19 × 7518

21 × 6802

38 × 3759

42 × 3401

57 × 2506

114 × 1253

133 × 1074

179 × 798

266 × 537

358 × 399

First multiples

142,842 · 285,684 (double) · 428,526 · 571,368 · 714,210 · 857,052 · 999,894 · 1,142,736 · 1,285,578 · 1,428,420

Sums & aliquot sequence

As consecutive integers: 47,613 + 47,614 + 47,615 35,709 + 35,710 + 35,711 + 35,712 20,403 + 20,404 + … + 20,409 11,898 + 11,899 + … + 11,909

Aliquot sequence: 142,842 → 202,758 → 211,962 → 211,974 → 287,226 → 362,016 → 696,384 → 1,579,456 → 1,895,264 → 2,369,584 → 2,877,600 → 7,434,240 → 18,711,432 → 33,265,368 → 59,270,712 → 92,265,288 → 138,997,272 — unresolved within range

Continued fraction of √n

√142,842 = [377; (1, 16, 1, 754)]

Period length 4 — the block in parentheses repeats forever.

Representations

In words: one hundred forty-two thousand eight hundred forty-two
Ordinal: 142842nd
Binary: 100010110111111010
Octal: 426772
Hexadecimal: 0x22DFA
Base64: Ai36
One's complement: 4,294,824,453 (32-bit)
Scientific notation: 1.42842 × 10⁵
As a duration: 142,842 s = 1 day, 15 hours, 40 minutes, 42 seconds

In other bases

ternary (3) 21020221110

quaternary (4) 202313322

quinary (5) 14032332

senary (6) 3021150

septenary (7) 1133310

nonary (9) 236843

undecimal (11) 98357

duodecimal (12) 6a7b6

tridecimal (13) 5002b

tetradecimal (14) 3a0b0

pentadecimal (15) 2c4cc

As an angle

142,842° = 396 × 360° + 282°

282° ≈ 4.922 rad

Compass bearing: WNW (west-northwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒁹𒁹
Egyptian hieroglyphic: 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
Greek (Milesian): ͵ρμβωμβʹ
Mayan (base 20): 𝋱·𝋱·𝋢·𝋢
Chinese: 一十四萬二千八百四十二
Chinese (financial): 壹拾肆萬貳仟捌佰肆拾貳

In other modern scripts

Eastern Arabic ١٤٢٨٤٢ Devanagari १४२८४२ Bengali ১৪২৮৪২ Tamil ௧௪௨௮௪௨ Thai ๑๔๒๘๔๒ Tibetan ༡༤༢༨༤༢ Khmer ១៤២៨៤២ Lao ໑໔໒໘໔໒ Burmese ၁၄၂၈၄၂

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142842, here are decompositions:

5 + 142837 = 142842
31 + 142811 = 142842
43 + 142799 = 142842
53 + 142789 = 142842
71 + 142771 = 142842
83 + 142759 = 142842
109 + 142733 = 142842
131 + 142711 = 142842

Showing the first eight; more decompositions exist.

Unicode codepoint

𢷺

CJK Unified Ideograph-22Dfa

U+22DFA

Other letter (Lo)

UTF-8 encoding: F0 A2 B7 BA (4 bytes).

Lookup U+22DFA on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#022DFA

RGB(2, 45, 250)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.250.

Address: 0.2.45.250
Class: reserved
IPv4-mapped IPv6: ::ffff:0.2.45.250

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

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 142,842 and was likely granted around 1872.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Look up US142,842 on Google Patents ↗ Look up on USPTO ↗