139,080
139,080 is a composite number, even.
139,080 (one hundred thirty-nine thousand eighty) is an even 6-digit number. It is a composite number with 64 divisors, and factors as 2³ × 3 × 5 × 19 × 61. Its proper divisors sum to 307,320, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21F48.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 80,931
- Recamán's sequence
- a(490,667) = 139,080
- Square (n²)
- 19,343,246,400
- Cube (n³)
- 2,690,258,709,312,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 446,400
- φ(n) — Euler's totient
- 34,560
- Sum of prime factors
- 94
Primality
Prime factorization: 2 3 × 3 × 5 × 19 × 61
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,080 = [372; (1, 14, 4, 2, 12, 1, 6, 1, 12, 2, 4, 14, 1, 744)]
Period length 14 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand eighty
- Ordinal
- 139080th
- Binary
- 100001111101001000
- Octal
- 417510
- Hexadecimal
- 0x21F48
- Base64
- Ah9I
- One's complement
- 4,294,828,215 (32-bit)
- Scientific notation
- 1.3908 × 10⁵
- As a duration
- 139,080 s = 1 day, 14 hours, 38 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλθπʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋮·𝋠
- Chinese
- 一十三萬九千零八十
- Chinese (financial)
- 壹拾參萬玖仟零捌拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139080, here are decompositions:
- 13 + 139067 = 139080
- 47 + 139033 = 139080
- 59 + 139021 = 139080
- 103 + 138977 = 139080
- 113 + 138967 = 139080
- 157 + 138923 = 139080
- 163 + 138917 = 139080
- 181 + 138899 = 139080
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 BD 88 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.72.
- Address
- 0.2.31.72
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.72
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 139,080 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.