Live analysis

139,842

139,842 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.).

139,842 (one hundred thirty-nine thousand eight hundred forty-two) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2 × 3² × 17 × 457. Its proper divisors sum to 181,674, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22242.

Abundant Number Cube-Free Odious Number Pernicious Number Practical Number Recamán's Sequence Semiperfect Number

Interestingness

★ ★ ☆ ☆ ☆

4 notable facts · grade D

139,830 139,831 139,832 139,833 139,834 139,835 139,836 139,837 139,838 139,839 139,840 139,841 139,842 139,843 139,844 139,845 139,846 139,847 139,848 139,849 139,850 139,851 139,852 139,853 139,854

less more

Properties

Parity: Even
Digit count: 6
Digit sum: 27
Digit product: 1,728
Digital root: 9
Palindrome: No
Bit width: 18 bits
Reversed: 248,931
Recamán's sequence: a(489,143) = 139,842
Square (n²): 19,555,784,964
Cube (n³): 2,734,720,080,935,688
Divisor count: 24
σ(n) — sum of divisors: 321,516
φ(n) — Euler's totient: 43,776
Sum of prime factors: 482

Primality

Prime factorization: 2 × 3 ² × 17 × 457

Nearest primes: 139,837 (−5) · 139,861 (+19)

Divisors & multiples

All divisors (24)

1 · 2 · 3 · 6 · 9 · 17 · 18 · 34 · 51 · 102 · 153 · 306 · 457 · 914 · 1371 · 2742 · 4113 · 7769 · 8226 · 15538 · 23307 · 46614 · 69921 (half) · 139842

Aliquot sum (sum of proper divisors): 181,674

Factor pairs (a × b = 139,842)

1 × 139842

2 × 69921

3 × 46614

6 × 23307

9 × 15538

17 × 8226

18 × 7769

34 × 4113

51 × 2742

102 × 1371

153 × 914

306 × 457

First multiples

139,842 · 279,684 (double) · 419,526 · 559,368 · 699,210 · 839,052 · 978,894 · 1,118,736 · 1,258,578 · 1,398,420

Sums & aliquot sequence

As a sum of two squares: 129² + 351² = 249² + 279²

As consecutive integers: 46,613 + 46,614 + 46,615 34,959 + 34,960 + 34,961 + 34,962 15,534 + 15,535 + … + 15,542 11,648 + 11,649 + … + 11,659

Aliquot sequence: 139,842 → 181,674 → 211,992 → 378,528 → 615,360 → 1,341,456 → 2,124,096 → 4,362,048 → 8,142,626 → 4,789,834 → 3,421,334 → 2,443,834 → 1,221,920 → 2,080,288 → 2,746,016 → 4,366,432 → 5,606,720 — unresolved within range

Continued fraction of √n

√139,842 = [373; (1, 20, 1, 746)]

Period length 4 — the block in parentheses repeats forever.

Representations

In words: one hundred thirty-nine thousand eight hundred forty-two
Ordinal: 139842nd
Binary: 100010001001000010
Octal: 421102
Hexadecimal: 0x22242
Base64: AiJC
One's complement: 4,294,827,453 (32-bit)
Scientific notation: 1.39842 × 10⁵
As a duration: 139,842 s = 1 day, 14 hours, 50 minutes, 42 seconds

In other bases

ternary (3) 21002211100

quaternary (4) 202021002

quinary (5) 13433332

senary (6) 2555230

septenary (7) 1121463

nonary (9) 232740

undecimal (11) 9607a

duodecimal (12) 68b16

tridecimal (13) 4b861

tetradecimal (14) 38d6a

pentadecimal (15) 2b67c

As an angle

139,842° = 388 × 360° + 162°

162° ≈ 2.827 rad

Compass bearing: SSE (south-southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒁹𒁹
Egyptian hieroglyphic: 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
Greek (Milesian): ͵ρλθωμβʹ
Mayan (base 20): 𝋱·𝋩·𝋬·𝋢
Chinese: 一十三萬九千八百四十二
Chinese (financial): 壹拾參萬玖仟捌佰肆拾貳

In other modern scripts

Eastern Arabic ١٣٩٨٤٢ Devanagari १३९८४२ Bengali ১৩৯৮৪২ Tamil ௧௩௯௮௪௨ Thai ๑๓๙๘๔๒ Tibetan ༡༣༩༨༤༢ Khmer ១៣៩៨៤២ Lao ໑໓໙໘໔໒ Burmese ၁၃၉၈၄၂

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139842, here are decompositions:

5 + 139837 = 139842
11 + 139831 = 139842
29 + 139813 = 139842
41 + 139801 = 139842
83 + 139759 = 139842
89 + 139753 = 139842
103 + 139739 = 139842
113 + 139729 = 139842

Showing the first eight; more decompositions exist.

Unicode codepoint

𢉂

CJK Unified Ideograph-22242

U+22242

Other letter (Lo)

UTF-8 encoding: F0 A2 89 82 (4 bytes).

Lookup U+22242 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#022242

RGB(2, 34, 66)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.2.34.66.

Address: 0.2.34.66
Class: reserved
IPv4-mapped IPv6: ::ffff:0.2.34.66

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 139,842 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 US139,842 on Google Patents ↗ Look up on USPTO ↗