138,342
138,342 is a composite number, even.
138,342 (one hundred thirty-eight thousand three hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 3 × 23,057. Its proper divisors sum to 138,354, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21C66.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 576
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 243,831
- Recamán's sequence
- a(492,143) = 138,342
- Square (n²)
- 19,138,508,964
- Cube (n³)
- 2,647,659,607,097,688
- Divisor count
- 8
- σ(n) — sum of divisors
- 276,696
- φ(n) — Euler's totient
- 46,112
- Sum of prime factors
- 23,062
Primality
Prime factorization: 2 × 3 × 23057
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,342 = [371; (1, 16, 1, 2, 2, 14, 1, 3, 15, 1, 1, 2, 1, 10, 2, 1, 1, 2, 1, 1, 8, 14, 2, 7, …)]
Representations
- In words
- one hundred thirty-eight thousand three hundred forty-two
- Ordinal
- 138342nd
- Binary
- 100001110001100110
- Octal
- 416146
- Hexadecimal
- 0x21C66
- Base64
- Ahxm
- One's complement
- 4,294,828,953 (32-bit)
- Scientific notation
- 1.38342 × 10⁵
- As a duration
- 138,342 s = 1 day, 14 hours, 25 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλητμβʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋱·𝋢
- Chinese
- 一十三萬八千三百四十二
- Chinese (financial)
- 壹拾參萬捌仟參佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138342, here are decompositions:
- 5 + 138337 = 138342
- 19 + 138323 = 138342
- 23 + 138319 = 138342
- 31 + 138311 = 138342
- 53 + 138289 = 138342
- 59 + 138283 = 138342
- 101 + 138241 = 138342
- 103 + 138239 = 138342
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B1 A6 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.102.
- Address
- 0.2.28.102
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.102
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 138,342 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 138342 first appears in π at position 689,251 of the decimal expansion (the 689,251ordinal-suffix:st 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°.