42,100
42,100 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 7
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 124
- Recamán's sequence
- a(151,423) = 42,100
- Square (n²)
- 1,772,410,000
- Cube (n³)
- 74,618,461,000,000
- Divisor count
- 18
- σ(n) — sum of divisors
- 91,574
- φ(n) — Euler's totient
- 16,800
- Sum of prime factors
- 435
Primality
Prime factorization: 2 2 × 5 2 × 421
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand one hundred
- Ordinal
- 42100th
- Binary
- 1010010001110100
- Octal
- 122164
- Hexadecimal
- 0xA474
- Base64
- pHQ=
- One's complement
- 23,435 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢
- Greek (Milesian)
- ͵μβρʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋥·𝋠
- Chinese
- 四萬二千一百
- Chinese (financial)
- 肆萬貳仟壹佰
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,100 = 5
- e — Euler's number (e)
- Digit 42,100 = 3
- φ — Golden ratio (φ)
- Digit 42,100 = 9
- √2 — Pythagoras's (√2)
- Digit 42,100 = 6
- ln 2 — Natural log of 2
- Digit 42,100 = 7
- γ — Euler-Mascheroni (γ)
- Digit 42,100 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42100, here are decompositions:
- 11 + 42089 = 42100
- 17 + 42083 = 42100
- 29 + 42071 = 42100
- 83 + 42017 = 42100
- 101 + 41999 = 42100
- 131 + 41969 = 42100
- 173 + 41927 = 42100
- 197 + 41903 = 42100
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 91 B4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.116.
- Address
- 0.0.164.116
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.116
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42100 first appears in π at position 3,478 of the decimal expansion (the 3,478ordinal-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.