42,490
42,490 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 9,424
- Recamán's sequence
- a(150,643) = 42,490
- Square (n²)
- 1,805,400,100
- Cube (n³)
- 76,711,450,249,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 87,552
- φ(n) — Euler's totient
- 14,544
- Sum of prime factors
- 621
Primality
Prime factorization: 2 × 5 × 7 × 607
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand four hundred ninety
- Ordinal
- 42490th
- Binary
- 1010010111111010
- Octal
- 122772
- Hexadecimal
- 0xA5FA
- Base64
- pfo=
- One's complement
- 23,045 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μβυϟʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋤·𝋪
- Chinese
- 四萬二千四百九十
- Chinese (financial)
- 肆萬貳仟肆佰玖拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,490 = 8
- e — Euler's number (e)
- Digit 42,490 = 9
- φ — Golden ratio (φ)
- Digit 42,490 = 7
- √2 — Pythagoras's (√2)
- Digit 42,490 = 8
- ln 2 — Natural log of 2
- Digit 42,490 = 5
- γ — Euler-Mascheroni (γ)
- Digit 42,490 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42490, here are decompositions:
- 3 + 42487 = 42490
- 17 + 42473 = 42490
- 23 + 42467 = 42490
- 29 + 42461 = 42490
- 47 + 42443 = 42490
- 53 + 42437 = 42490
- 83 + 42407 = 42490
- 131 + 42359 = 42490
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 97 BA (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.165.250.
- Address
- 0.0.165.250
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.165.250
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42490 first appears in π at position 86,556 of the decimal expansion (the 86,556ordinal-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.