138,122
138,122 is a composite number, even.
138,122 (one hundred thirty-eight thousand one hundred twenty-two) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 69,061. Written other ways, in hexadecimal, 0x21B8A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 96
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 221,831
- Recamán's sequence
- a(492,583) = 138,122
- Square (n²)
- 19,077,686,884
- Cube (n³)
- 2,635,048,267,791,848
- Divisor count
- 4
- σ(n) — sum of divisors
- 207,186
- φ(n) — Euler's totient
- 69,060
- Sum of prime factors
- 69,063
Primality
Prime factorization: 2 × 69061
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,122 = [371; (1, 1, 1, 5, 5, 2, 1, 2, 3, 9, 1, 7, 1, 2, 1, 5, 1, 1, 3, 1, 15, 28, 1, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred twenty-two
- Ordinal
- 138122nd
- Binary
- 100001101110001010
- Octal
- 415612
- Hexadecimal
- 0x21B8A
- Base64
- AhuK
- One's complement
- 4,294,829,173 (32-bit)
- Scientific notation
- 1.38122 × 10⁵
- As a duration
- 138,122 s = 1 day, 14 hours, 22 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρληρκβʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋦·𝋢
- Chinese
- 一十三萬八千一百二十二
- Chinese (financial)
- 壹拾參萬捌仟壹佰貳拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138122, here are decompositions:
- 43 + 138079 = 138122
- 139 + 137983 = 138122
- 181 + 137941 = 138122
- 211 + 137911 = 138122
- 331 + 137791 = 138122
- 379 + 137743 = 138122
- 409 + 137713 = 138122
- 463 + 137659 = 138122
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AE 8A (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.138.
- Address
- 0.2.27.138
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.138
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 138,122 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 138122 first appears in π at position 561,762 of the decimal expansion (the 561,762ordinal-suffix:nd 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.