122,138
122,138 is a composite number, even.
122,138 (one hundred twenty-two thousand one hundred thirty-eight) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 173 × 353. Written other ways, in hexadecimal, 0x1DD1A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 96
- Digital root
- 8
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 831,221
- Square (n²)
- 14,917,691,044
- Cube (n³)
- 1,822,016,948,732,072
- Divisor count
- 8
- σ(n) — sum of divisors
- 184,788
- φ(n) — Euler's totient
- 60,544
- Sum of prime factors
- 528
Primality
Prime factorization: 2 × 173 × 353
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√122,138 = [349; (2, 13, 1, 3, 3, 1, 13, 2, 698)]
Period length 9 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-two thousand one hundred thirty-eight
- Ordinal
- 122138th
- Binary
- 11101110100011010
- Octal
- 356432
- Hexadecimal
- 0x1DD1A
- Base64
- Ad0a
- One's complement
- 4,294,845,157 (32-bit)
- Scientific notation
- 1.22138 × 10⁵
- As a duration
- 122,138 s = 1 day, 9 hours, 55 minutes, 38 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκβρληʹ
- Mayan (base 20)
- 𝋯·𝋥·𝋦·𝋲
- Chinese
- 一十二萬二千一百三十八
- Chinese (financial)
- 壹拾貳萬貳仟壹佰參拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 122138, here are decompositions:
- 7 + 122131 = 122138
- 97 + 122041 = 122138
- 109 + 122029 = 122138
- 127 + 122011 = 122138
- 229 + 121909 = 122138
- 271 + 121867 = 122138
- 349 + 121789 = 122138
- 547 + 121591 = 122138
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.221.26.
- Address
- 0.1.221.26
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.221.26
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 122,138 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 122138 first appears in π at position 157,873 of the decimal expansion (the 157,873ordinal-suffix:rd 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.