139,123
139,123 is a prime, odd.
139,123 (one hundred thirty-nine thousand one hundred twenty-three) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x21F73.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 162
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 321,931
- Recamán's sequence
- a(490,581) = 139,123
- Square (n²)
- 19,355,209,129
- Cube (n³)
- 2,692,754,759,653,867
- Divisor count
- 2
- σ(n) — sum of divisors
- 139,124
- φ(n) — Euler's totient
- 139,122
Primality
139,123 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,123 = [372; (1, 123, 3, 82, 1, 1, 4, 13, 1, 1, 2, 4, 1, 8, 2, 1, 1, 7, 2, 1, 15, 5, 4, 2, …)]
Representations
- In words
- one hundred thirty-nine thousand one hundred twenty-three
- Ordinal
- 139123rd
- Binary
- 100001111101110011
- Octal
- 417563
- Hexadecimal
- 0x21F73
- Base64
- Ah9z
- One's complement
- 4,294,828,172 (32-bit)
- Scientific notation
- 1.39123 × 10⁵
- As a duration
- 139,123 s = 1 day, 14 hours, 38 minutes, 43 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλθρκγʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋰·𝋣
- Chinese
- 一十三萬九千一百二十三
- Chinese (financial)
- 壹拾參萬玖仟壹佰貳拾參
Also seen as
UTF-8 encoding: F0 A1 BD B3 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.115.
- Address
- 0.2.31.115
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.115
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 139,123 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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.