122,642
122,642 is a composite number, even.
122,642 (one hundred twenty-two thousand six hundred forty-two) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 13 × 53 × 89. Written other ways, in hexadecimal, 0x1DF12.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 192
- Digital root
- 8
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 246,221
- Square (n²)
- 15,041,060,164
- Cube (n³)
- 1,844,665,700,633,288
- Divisor count
- 16
- σ(n) — sum of divisors
- 204,120
- φ(n) — Euler's totient
- 54,912
- Sum of prime factors
- 157
Primality
Prime factorization: 2 × 13 × 53 × 89
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√122,642 = [350; (4, 1, 13, 2, 40, 1, 2, 1, 1, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 4, 5, 1, 1, 2, …)]
Period length 31 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-two thousand six hundred forty-two
- Ordinal
- 122642nd
- Binary
- 11101111100010010
- Octal
- 357422
- Hexadecimal
- 0x1DF12
- Base64
- Ad8S
- One's complement
- 4,294,844,653 (32-bit)
- Scientific notation
- 1.22642 × 10⁵
- As a duration
- 122,642 s = 1 day, 10 hours, 4 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκβχμβʹ
- Mayan (base 20)
- 𝋯·𝋦·𝋬·𝋢
- Chinese
- 一十二萬二千六百四十二
- Chinese (financial)
- 壹拾貳萬貳仟陸佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 122642, here are decompositions:
- 31 + 122611 = 122642
- 43 + 122599 = 122642
- 109 + 122533 = 122642
- 139 + 122503 = 122642
- 193 + 122449 = 122642
- 199 + 122443 = 122642
- 241 + 122401 = 122642
- 379 + 122263 = 122642
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9D BC 92 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.223.18.
- Address
- 0.1.223.18
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.223.18
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 122,642 and was likely granted around 1871.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 122642 first appears in π at position 604,166 of the decimal expansion (the 604,166ordinal-suffix:th 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.