138,129
138,129 is a composite number, odd.
138,129 (one hundred thirty-eight thousand one hundred twenty-nine) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 3 × 41 × 1,123. Written other ways, in hexadecimal, 0x21B91.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 432
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 921,831
- Recamán's sequence
- a(492,569) = 138,129
- Square (n²)
- 19,079,620,641
- Cube (n³)
- 2,635,448,919,520,689
- Divisor count
- 8
- σ(n) — sum of divisors
- 188,832
- φ(n) — Euler's totient
- 89,760
- Sum of prime factors
- 1,167
Primality
Prime factorization: 3 × 41 × 1123
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,129 = [371; (1, 1, 1, 10, 1, 18, 6, 1, 8, 2, 3, 4, 9, 17, 5, 1, 1, 1, 1, 1, 1, 17, 1, 28, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred twenty-nine
- Ordinal
- 138129th
- Binary
- 100001101110010001
- Octal
- 415621
- Hexadecimal
- 0x21B91
- Base64
- AhuR
- One's complement
- 4,294,829,166 (32-bit)
- Scientific notation
- 1.38129 × 10⁵
- As a duration
- 138,129 s = 1 day, 14 hours, 22 minutes, 9 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληρκθʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋦·𝋩
- Chinese
- 一十三萬八千一百二十九
- Chinese (financial)
- 壹拾參萬捌仟壹佰貳拾玖
Also seen as
UTF-8 encoding: F0 A1 AE 91 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.145.
- Address
- 0.2.27.145
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.145
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 138,129 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 138129 first appears in π at position 978,678 of the decimal expansion (the 978,678ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.