102,742
102,742 is a composite number, even.
102,742 (one hundred two thousand seven hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 47 × 1,093. Written other ways, in hexadecimal, 0x19156.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 247,201
- Recamán's sequence
- a(97,251) = 102,742
- Square (n²)
- 10,555,918,564
- Cube (n³)
- 1,084,536,185,102,488
- Divisor count
- 8
- σ(n) — sum of divisors
- 157,536
- φ(n) — Euler's totient
- 50,232
- Sum of prime factors
- 1,142
Primality
Prime factorization: 2 × 47 × 1093
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√102,742 = [320; (1, 1, 6, 1, 6, 1, 1, 2, 2, 1, 4, 1, 3, 2, 2, 1, 1, 1, 8, 1, 1, 1, 15, 1, …)]
Representations
- In words
- one hundred two thousand seven hundred forty-two
- Ordinal
- 102742nd
- Binary
- 11001000101010110
- Octal
- 310526
- Hexadecimal
- 0x19156
- Base64
- AZFW
- One's complement
- 4,294,864,553 (32-bit)
- Scientific notation
- 1.02742 × 10⁵
- As a duration
- 102,742 s = 1 day, 4 hours, 32 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρβψμβʹ
- Mayan (base 20)
- 𝋬·𝋰·𝋱·𝋢
- Chinese
- 一十萬二千七百四十二
- Chinese (financial)
- 壹拾萬貳仟柒佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 102742, here are decompositions:
- 41 + 102701 = 102742
- 89 + 102653 = 102742
- 131 + 102611 = 102742
- 149 + 102593 = 102742
- 179 + 102563 = 102742
- 191 + 102551 = 102742
- 239 + 102503 = 102742
- 281 + 102461 = 102742
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.145.86.
- Address
- 0.1.145.86
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.145.86
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 102,742 and was likely granted around 1870.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 102742 first appears in π at position 522,632 of the decimal expansion (the 522,632ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.