138,125
138,125 is a composite number, odd.
138,125 (one hundred thirty-eight thousand one hundred twenty-five) is an odd 6-digit number. It is a composite number with 20 divisors, and factors as 5⁴ × 13 × 17. Written other ways, in hexadecimal, 0x21B8D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 240
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 521,831
- Recamán's sequence
- a(492,577) = 138,125
- Square (n²)
- 19,078,515,625
- Cube (n³)
- 2,635,219,970,703,125
- Divisor count
- 20
- σ(n) — sum of divisors
- 196,812
- φ(n) — Euler's totient
- 96,000
- Sum of prime factors
- 50
Primality
Prime factorization: 5 4 × 13 × 17
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,125 = [371; (1, 1, 1, 6, 1, 3, 3, 1, 1, 6, 1, 6, 2, 29, 3, 1, 3, 7, 6, 185, 1, 1, 1, 29, …)]
Period length 58 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand one hundred twenty-five
- Ordinal
- 138125th
- Binary
- 100001101110001101
- Octal
- 415615
- Hexadecimal
- 0x21B8D
- Base64
- AhuN
- One's complement
- 4,294,829,170 (32-bit)
- Scientific notation
- 1.38125 × 10⁵
- As a duration
- 138,125 s = 1 day, 14 hours, 22 minutes, 5 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληρκεʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋦·𝋥
- Chinese
- 一十三萬八千一百二十五
- Chinese (financial)
- 壹拾參萬捌仟壹佰貳拾伍
Also seen as
UTF-8 encoding: F0 A1 AE 8D (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.141.
- Address
- 0.2.27.141
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.141
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 138,125 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 138125 first appears in π at position 84,490 of the decimal expansion (the 84,490ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.