121,142
121,142 is a composite number, even.
121,142 (one hundred twenty-one thousand one hundred forty-two) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 7 × 17 × 509. Written other ways, in hexadecimal, 0x1D936.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 11
- Digit product
- 16
- Digital root
- 2
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 241,121
- Square (n²)
- 14,675,384,164
- Cube (n³)
- 1,777,805,388,395,288
- Divisor count
- 16
- σ(n) — sum of divisors
- 220,320
- φ(n) — Euler's totient
- 48,768
- Sum of prime factors
- 535
Primality
Prime factorization: 2 × 7 × 17 × 509
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√121,142 = [348; (18, 3, 6, 1, 1, 3, 2, 1, 5, 4, 1, 9, 1, 1, 2, 1, 1, 15, 1, 1, 1, 1, 6, 6, …)]
Period length 52 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-one thousand one hundred forty-two
- Ordinal
- 121142nd
- Binary
- 11101100100110110
- Octal
- 354466
- Hexadecimal
- 0x1D936
- Base64
- Adk2
- One's complement
- 4,294,846,153 (32-bit)
- Scientific notation
- 1.21142 × 10⁵
- As a duration
- 121,142 s = 1 day, 9 hours, 39 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκαρμβʹ
- Mayan (base 20)
- 𝋯·𝋢·𝋱·𝋢
- Chinese
- 一十二萬一千一百四十二
- Chinese (financial)
- 壹拾貳萬壹仟壹佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 121142, here are decompositions:
- 3 + 121139 = 121142
- 19 + 121123 = 121142
- 61 + 121081 = 121142
- 79 + 121063 = 121142
- 103 + 121039 = 121142
- 199 + 120943 = 121142
- 223 + 120919 = 121142
- 271 + 120871 = 121142
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9D A4 B6 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.217.54.
- Address
- 0.1.217.54
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.217.54
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 121,142 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 121142 first appears in π at position 715,319 of the decimal expansion (the 715,319ordinal-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.