42,880
42,880 is a composite number, even.
42,880 (forty-two thousand eight hundred eighty) is an even 5-digit number. It is a composite number with 32 divisors, and factors as 2⁷ × 5 × 67. Its proper divisors sum to 61,160, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xA780.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 22
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 8,824
- Recamán's sequence
- a(72,832) = 42,880
- Square (n²)
- 1,838,694,400
- Cube (n³)
- 78,843,215,872,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 104,040
- φ(n) — Euler's totient
- 16,896
- Sum of prime factors
- 86
Primality
Prime factorization: 2 7 × 5 × 67
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√42,880 = [207; (13, 2, 1, 3, 1, 45, 4, 2, 1, 25, 5, 4, 1, 10, 1, 2, 3, 2, 1, 1, 2, 1, 3, 103, …)]
Period length 48 — the block in parentheses repeats forever.
Representations
- In words
- forty-two thousand eight hundred eighty
- Ordinal
- 42880th
- Binary
- 1010011110000000
- Octal
- 123600
- Hexadecimal
- 0xA780
- Base64
- p4A=
- One's complement
- 22,655 (16-bit)
- Scientific notation
- 4.288 × 10⁴
- As a duration
- 42,880 s = 11 hours, 54 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μβωπʹ
- Mayan (base 20)
- 𝋥·𝋧·𝋤·𝋠
- Chinese
- 四萬二千八百八十
- Chinese (financial)
- 肆萬貳仟捌佰捌拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,880 = 4
- e — Euler's number (e)
- Digit 42,880 = 3
- φ — Golden ratio (φ)
- Digit 42,880 = 6
- √2 — Pythagoras's (√2)
- Digit 42,880 = 5
- ln 2 — Natural log of 2
- Digit 42,880 = 1
- γ — Euler-Mascheroni (γ)
- Digit 42,880 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42880, here are decompositions:
- 17 + 42863 = 42880
- 41 + 42839 = 42880
- 59 + 42821 = 42880
- 83 + 42797 = 42880
- 107 + 42773 = 42880
- 113 + 42767 = 42880
- 137 + 42743 = 42880
- 179 + 42701 = 42880
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9E 80 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.167.128.
- Address
- 0.0.167.128
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.167.128
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42880 first appears in π at position 9,913 of the decimal expansion (the 9,913ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.