42,988
42,988 is a composite number, even.
42,988 (forty-two thousand nine hundred eighty-eight) is an even 5-digit number. It is a composite number with 12 divisors, and factors as 2² × 11 × 977. Written other ways, in hexadecimal, 0xA7EC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 31
- Digit product
- 4,608
- Digital root
- 4
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 88,924
- Recamán's sequence
- a(72,616) = 42,988
- Square (n²)
- 1,847,968,144
- Cube (n³)
- 79,440,454,574,272
- Divisor count
- 12
- σ(n) — sum of divisors
- 82,152
- φ(n) — Euler's totient
- 19,520
- Sum of prime factors
- 992
Primality
Prime factorization: 2 2 × 11 × 977
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√42,988 = [207; (2, 1, 51, 5, 1, 102, 1, 5, 51, 1, 2, 414)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- forty-two thousand nine hundred eighty-eight
- Ordinal
- 42988th
- Binary
- 1010011111101100
- Octal
- 123754
- Hexadecimal
- 0xA7EC
- Base64
- p+w=
- One's complement
- 22,547 (16-bit)
- Scientific notation
- 4.2988 × 10⁴
- As a duration
- 42,988 s = 11 hours, 56 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβϡπηʹ
- Mayan (base 20)
- 𝋥·𝋧·𝋩·𝋨
- Chinese
- 四萬二千九百八十八
- Chinese (financial)
- 肆萬貳仟玖佰捌拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,988 = 5
- e — Euler's number (e)
- Digit 42,988 = 8
- φ — Golden ratio (φ)
- Digit 42,988 = 9
- √2 — Pythagoras's (√2)
- Digit 42,988 = 4
- ln 2 — Natural log of 2
- Digit 42,988 = 6
- γ — Euler-Mascheroni (γ)
- Digit 42,988 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42988, here are decompositions:
- 59 + 42929 = 42988
- 89 + 42899 = 42988
- 149 + 42839 = 42988
- 167 + 42821 = 42988
- 191 + 42797 = 42988
- 251 + 42737 = 42988
- 269 + 42719 = 42988
- 311 + 42677 = 42988
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.167.236.
- Address
- 0.0.167.236
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.167.236
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42988 first appears in π at position 30,696 of the decimal expansion (the 30,696ordinal-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.