139,138
139,138 is a composite number, even.
139,138 (one hundred thirty-nine thousand one hundred thirty-eight) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 73 × 953. Written other ways, in hexadecimal, 0x21F82.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 648
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 831,931
- Recamán's sequence
- a(490,551) = 139,138
- Square (n²)
- 19,359,383,044
- Cube (n³)
- 2,693,625,837,976,072
- Divisor count
- 8
- σ(n) — sum of divisors
- 211,788
- φ(n) — Euler's totient
- 68,544
- Sum of prime factors
- 1,028
Primality
Prime factorization: 2 × 73 × 953
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,138 = [373; (82, 1, 8, 9, 10, 9, 8, 1, 82, 746)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand one hundred thirty-eight
- Ordinal
- 139138th
- Binary
- 100001111110000010
- Octal
- 417602
- Hexadecimal
- 0x21F82
- Base64
- Ah+C
- One's complement
- 4,294,828,157 (32-bit)
- Scientific notation
- 1.39138 × 10⁵
- As a duration
- 139,138 s = 1 day, 14 hours, 38 minutes, 58 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλθρληʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋰·𝋲
- Chinese
- 一十三萬九千一百三十八
- Chinese (financial)
- 壹拾參萬玖仟壹佰參拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139138, here are decompositions:
- 5 + 139133 = 139138
- 17 + 139121 = 139138
- 29 + 139109 = 139138
- 47 + 139091 = 139138
- 59 + 139079 = 139138
- 71 + 139067 = 139138
- 179 + 138959 = 139138
- 239 + 138899 = 139138
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 BE 82 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.130.
- Address
- 0.2.31.130
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.130
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 139,138 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.