138,130
138,130 is a composite number, even.
138,130 (one hundred thirty-eight thousand one hundred thirty) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 19 × 727. Written other ways, in hexadecimal, 0x21B92.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 31,831
- Recamán's sequence
- a(492,567) = 138,130
- Square (n²)
- 19,079,896,900
- Cube (n³)
- 2,635,506,158,797,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 262,080
- φ(n) — Euler's totient
- 52,272
- Sum of prime factors
- 753
Primality
Prime factorization: 2 × 5 × 19 × 727
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,130 = [371; (1, 1, 1, 12, 1, 5, 1, 1, 2, 5, 1, 2, 1, 81, 1, 5, 1, 2, 2, 3, 5, 2, 7, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred thirty
- Ordinal
- 138130th
- Binary
- 100001101110010010
- Octal
- 415622
- Hexadecimal
- 0x21B92
- Base64
- AhuS
- One's complement
- 4,294,829,165 (32-bit)
- Scientific notation
- 1.3813 × 10⁵
- As a duration
- 138,130 s = 1 day, 14 hours, 22 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρληρλʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋦·𝋪
- Chinese
- 一十三萬八千一百三十
- Chinese (financial)
- 壹拾參萬捌仟壹佰參拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138130, here are decompositions:
- 17 + 138113 = 138130
- 23 + 138107 = 138130
- 29 + 138101 = 138130
- 53 + 138077 = 138130
- 59 + 138071 = 138130
- 71 + 138059 = 138130
- 89 + 138041 = 138130
- 131 + 137999 = 138130
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AE 92 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.146.
- Address
- 0.2.27.146
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.146
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 138,130 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.