138,065
138,065 is a composite number, odd.
138,065 (one hundred thirty-eight thousand sixty-five) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 5 × 53 × 521. Written other ways, in hexadecimal, 0x21B51.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 560,831
- Recamán's sequence
- a(492,697) = 138,065
- Square (n²)
- 19,061,944,225
- Cube (n³)
- 2,631,787,329,424,625
- Divisor count
- 8
- σ(n) — sum of divisors
- 169,128
- φ(n) — Euler's totient
- 108,160
- Sum of prime factors
- 579
Primality
Prime factorization: 5 × 53 × 521
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,065 = [371; (1, 1, 3, 46, 6, 4, 2, 11, 6, 18, 2, 2, 2, 2, 2, 18, 6, 11, 2, 4, 6, 46, 3, 1, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand sixty-five
- Ordinal
- 138065th
- Binary
- 100001101101010001
- Octal
- 415521
- Hexadecimal
- 0x21B51
- Base64
- AhtR
- One's complement
- 4,294,829,230 (32-bit)
- Scientific notation
- 1.38065 × 10⁵
- As a duration
- 138,065 s = 1 day, 14 hours, 21 minutes, 5 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληξεʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋣·𝋥
- Chinese
- 一十三萬八千零六十五
- Chinese (financial)
- 壹拾參萬捌仟零陸拾伍
Also seen as
UTF-8 encoding: F0 A1 AD 91 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.81.
- Address
- 0.2.27.81
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.81
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 138,065 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.