138,426
138,426 is a composite number, even.
138,426 (one hundred thirty-eight thousand four hundred twenty-six) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 3 × 23,071. Its proper divisors sum to 138,438, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21CBA.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 1,152
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 624,831
- Recamán's sequence
- a(491,975) = 138,426
- Square (n²)
- 19,161,757,476
- Cube (n³)
- 2,652,485,440,372,776
- Divisor count
- 8
- σ(n) — sum of divisors
- 276,864
- φ(n) — Euler's totient
- 46,140
- Sum of prime factors
- 23,076
Primality
Prime factorization: 2 × 3 × 23071
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,426 = [372; (17, 1, 2, 1, 1, 14, 1, 1, 1, 1, 2, 2, 1, 1, 2, 4, 1, 2, 1, 12, 3, 6, 2, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand four hundred twenty-six
- Ordinal
- 138426th
- Binary
- 100001110010111010
- Octal
- 416272
- Hexadecimal
- 0x21CBA
- Base64
- Ahy6
- One's complement
- 4,294,828,869 (32-bit)
- Scientific notation
- 1.38426 × 10⁵
- As a duration
- 138,426 s = 1 day, 14 hours, 27 minutes, 6 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληυκϛʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋡·𝋦
- Chinese
- 一十三萬八千四百二十六
- Chinese (financial)
- 壹拾參萬捌仟肆佰貳拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138426, here are decompositions:
- 19 + 138407 = 138426
- 23 + 138403 = 138426
- 37 + 138389 = 138426
- 53 + 138373 = 138426
- 89 + 138337 = 138426
- 103 + 138323 = 138426
- 107 + 138319 = 138426
- 137 + 138289 = 138426
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B2 BA (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.186.
- Address
- 0.2.28.186
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.186
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 138,426 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.