121,742
121,742 is a composite number, even.
121,742 (one hundred twenty-one thousand seven hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 29 × 2,099. Written other ways, in hexadecimal, 0x1DB8E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 112
- Digital root
- 8
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 247,121
- Square (n²)
- 14,821,114,564
- Cube (n³)
- 1,804,352,129,250,488
- Divisor count
- 8
- σ(n) — sum of divisors
- 189,000
- φ(n) — Euler's totient
- 58,744
- Sum of prime factors
- 2,130
Primality
Prime factorization: 2 × 29 × 2099
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√121,742 = [348; (1, 10, 1, 4, 1, 5, 1, 2, 4, 3, 1, 2, 4, 3, 9, 8, 3, 3, 53, 2, 1, 1, 1, 4, …)]
Representations
- In words
- one hundred twenty-one thousand seven hundred forty-two
- Ordinal
- 121742nd
- Binary
- 11101101110001110
- Octal
- 355616
- Hexadecimal
- 0x1DB8E
- Base64
- AduO
- One's complement
- 4,294,845,553 (32-bit)
- Scientific notation
- 1.21742 × 10⁵
- As a duration
- 121,742 s = 1 day, 9 hours, 49 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκαψμβʹ
- Mayan (base 20)
- 𝋯·𝋤·𝋧·𝋢
- Chinese
- 一十二萬一千七百四十二
- Chinese (financial)
- 壹拾貳萬壹仟柒佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 121742, here are decompositions:
- 31 + 121711 = 121742
- 109 + 121633 = 121742
- 151 + 121591 = 121742
- 163 + 121579 = 121742
- 211 + 121531 = 121742
- 241 + 121501 = 121742
- 373 + 121369 = 121742
- 409 + 121333 = 121742
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.219.142.
- Address
- 0.1.219.142
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.219.142
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 121,742 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 121742 first appears in π at position 26,772 of the decimal expansion (the 26,772ordinal-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.