66,142
66,142 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 19
- Digit product
- 288
- Digital root
- 1
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 24,166
- Recamán's sequence
- a(133,107) = 66,142
- Square (n²)
- 4,374,764,164
- Cube (n³)
- 289,355,651,335,288
- Divisor count
- 4
- σ(n) — sum of divisors
- 99,216
- φ(n) — Euler's totient
- 33,070
- Sum of prime factors
- 33,073
Primality
Prime factorization: 2 × 33071
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- sixty-six thousand one hundred forty-two
- Ordinal
- 66142nd
- Binary
- 10000001001011110
- Octal
- 201136
- Hexadecimal
- 0x1025E
- Base64
- AQJe
- One's complement
- 4,294,901,153 (32-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ξϛρμβʹ
- Mayan (base 20)
- 𝋨·𝋥·𝋧·𝋢
- Chinese
- 六萬六千一百四十二
- Chinese (financial)
- 陸萬陸仟壹佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 66,142 = 1
- e — Euler's number (e)
- Digit 66,142 = 7
- φ — Golden ratio (φ)
- Digit 66,142 = 0
- √2 — Pythagoras's (√2)
- Digit 66,142 = 6
- ln 2 — Natural log of 2
- Digit 66,142 = 1
- γ — Euler-Mascheroni (γ)
- Digit 66,142 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 66142, here are decompositions:
- 5 + 66137 = 66142
- 53 + 66089 = 66142
- 59 + 66083 = 66142
- 71 + 66071 = 66142
- 101 + 66041 = 66142
- 113 + 66029 = 66142
- 149 + 65993 = 66142
- 179 + 65963 = 66142
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.2.94.
- Address
- 0.1.2.94
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.2.94
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 66142 first appears in π at position 80,608 of the decimal expansion (the 80,608ordinal-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.