139,081
139,081 is a composite number, odd.
139,081 (one hundred thirty-nine thousand eighty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 23 × 6,047. Written other ways, in hexadecimal, 0x21F49.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 180,931
- Recamán's sequence
- a(490,665) = 139,081
- Square (n²)
- 19,343,524,561
- Cube (n³)
- 2,690,316,739,468,441
- Divisor count
- 4
- σ(n) — sum of divisors
- 145,152
- φ(n) — Euler's totient
- 133,012
- Sum of prime factors
- 6,070
Primality
Prime factorization: 23 × 6047
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,081 = [372; (1, 14, 1, 1, 5, 1, 2, 3, 18, 2, 1, 6, 1, 2, 2, 9, 1, 1, 12, 1, 1, 3, 1, 1, …)]
Representations
- In words
- one hundred thirty-nine thousand eighty-one
- Ordinal
- 139081st
- Binary
- 100001111101001001
- Octal
- 417511
- Hexadecimal
- 0x21F49
- Base64
- Ah9J
- One's complement
- 4,294,828,214 (32-bit)
- Scientific notation
- 1.39081 × 10⁵
- As a duration
- 139,081 s = 1 day, 14 hours, 38 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλθπαʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋮·𝋡
- Chinese
- 一十三萬九千零八十一
- Chinese (financial)
- 壹拾參萬玖仟零捌拾壹
Also seen as
UTF-8 encoding: F0 A1 BD 89 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.73.
- Address
- 0.2.31.73
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.73
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 139,081 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.