122,142
122,142 is a composite number, even.
122,142 (one hundred twenty-two thousand one hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 3 × 20,357. Its proper divisors sum to 122,154, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1DD1E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 12
- Digit product
- 32
- Digital root
- 3
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 241,221
- Square (n²)
- 14,918,668,164
- Cube (n³)
- 1,822,195,966,887,288
- Divisor count
- 8
- σ(n) — sum of divisors
- 244,296
- φ(n) — Euler's totient
- 40,712
- Sum of prime factors
- 20,362
Primality
Prime factorization: 2 × 3 × 20357
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√122,142 = [349; (2, 20, 1, 2, 7, 5, 1, 1, 1, 3, 1, 1, 3, 2, 5, 3, 2, 3, 1, 1, 14, 3, 4, 10, …)]
Representations
- In words
- one hundred twenty-two thousand one hundred forty-two
- Ordinal
- 122142nd
- Binary
- 11101110100011110
- Octal
- 356436
- Hexadecimal
- 0x1DD1E
- Base64
- Ad0e
- One's complement
- 4,294,845,153 (32-bit)
- Scientific notation
- 1.22142 × 10⁵
- As a duration
- 122,142 s = 1 day, 9 hours, 55 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκβρμβʹ
- Mayan (base 20)
- 𝋯·𝋥·𝋧·𝋢
- Chinese
- 一十二萬二千一百四十二
- Chinese (financial)
- 壹拾貳萬貳仟壹佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 122142, here are decompositions:
- 11 + 122131 = 122142
- 43 + 122099 = 122142
- 61 + 122081 = 122142
- 73 + 122069 = 122142
- 89 + 122053 = 122142
- 101 + 122041 = 122142
- 103 + 122039 = 122142
- 109 + 122033 = 122142
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.221.30.
- Address
- 0.1.221.30
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.221.30
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 122,142 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 122142 first appears in π at position 460,875 of the decimal expansion (the 460,875ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.