42,020
42,020 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 8
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 2,024
- Recamán's sequence
- a(151,583) = 42,020
- Square (n²)
- 1,765,680,400
- Cube (n³)
- 74,193,890,408,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 96,768
- φ(n) — Euler's totient
- 15,200
- Sum of prime factors
- 211
Primality
Prime factorization: 2 2 × 5 × 11 × 191
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand twenty
- Ordinal
- 42020th
- Binary
- 1010010000100100
- Octal
- 122044
- Hexadecimal
- 0xA424
- Base64
- pCQ=
- One's complement
- 23,515 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓎆
- Greek (Milesian)
- ͵μβκʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋡·𝋠
- Chinese
- 四萬二千零二十
- Chinese (financial)
- 肆萬貳仟零貳拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,020 = 8
- e — Euler's number (e)
- Digit 42,020 = 3
- φ — Golden ratio (φ)
- Digit 42,020 = 9
- √2 — Pythagoras's (√2)
- Digit 42,020 = 1
- ln 2 — Natural log of 2
- Digit 42,020 = 5
- γ — Euler-Mascheroni (γ)
- Digit 42,020 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42020, here are decompositions:
- 3 + 42017 = 42020
- 7 + 42013 = 42020
- 37 + 41983 = 42020
- 61 + 41959 = 42020
- 67 + 41953 = 42020
- 73 + 41947 = 42020
- 79 + 41941 = 42020
- 109 + 41911 = 42020
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 90 A4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.36.
- Address
- 0.0.164.36
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.36
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42020 first appears in π at position 71,157 of the decimal expansion (the 71,157ordinal-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.