142,805
142,805 is a composite number, odd.
142,805 (one hundred forty-two thousand eight hundred five) is an odd 6-digit number. It is a composite number with 10 divisors, and factors as 5 × 13⁴. Written other ways, in hexadecimal, 0x22DD5.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 508,241
- Recamán's sequence
- a(222,806) = 142,805
- Square (n²)
- 20,393,268,025
- Cube (n³)
- 2,912,260,640,310,125
- Divisor count
- 10
- σ(n) — sum of divisors
- 185,646
- φ(n) — Euler's totient
- 105,456
- Sum of prime factors
- 57
Primality
Prime factorization: 5 × 13 4
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,805 = [377; (1, 8, 1, 1, 3, 6, 4, 3, 5, 7, 1, 3, 3, 2, 1, 3, 1, 3, 2, 3, 2, 1, 4, 5, …)]
Representations
- In words
- one hundred forty-two thousand eight hundred five
- Ordinal
- 142805th
- Binary
- 100010110111010101
- Octal
- 426725
- Hexadecimal
- 0x22DD5
- Base64
- Ai3V
- One's complement
- 4,294,824,490 (32-bit)
- Scientific notation
- 1.42805 × 10⁵
- As a duration
- 142,805 s = 1 day, 15 hours, 40 minutes, 5 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβωεʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋠·𝋥
- Chinese
- 一十四萬二千八百零五
- Chinese (financial)
- 壹拾肆萬貳仟捌佰零伍
Also seen as
UTF-8 encoding: F0 A2 B7 95 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.213.
- Address
- 0.2.45.213
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.213
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 142,805 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 142805 first appears in π at position 958,400 of the decimal expansion (the 958,400ordinal-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.