42,013
42,013 is a prime, odd.
42,013 (forty-two thousand thirteen) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xA41D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 10
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 31,024
- Recamán's sequence
- a(151,597) = 42,013
- Square (n²)
- 1,765,092,169
- Cube (n³)
- 74,156,817,296,197
- Divisor count
- 2
- σ(n) — sum of divisors
- 42,014
- φ(n) — Euler's totient
- 42,012
Primality
42,013 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√42,013 = [204; (1, 33, 6, 11, 4, 1, 1, 14, 1, 1, 1, 2, 4, 31, 3, 3, 1, 1, 1, 6, 12, 3, 1, 2, …)]
Representations
- In words
- forty-two thousand thirteen
- Ordinal
- 42013th
- Binary
- 1010010000011101
- Octal
- 122035
- Hexadecimal
- 0xA41D
- Base64
- pB0=
- One's complement
- 23,522 (16-bit)
- Scientific notation
- 4.2013 × 10⁴
- As a duration
- 42,013 s = 11 hours, 40 minutes, 13 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋 𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβιγʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋠·𝋭
- Chinese
- 四萬二千零一十三
- Chinese (financial)
- 肆萬貳仟零壹拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,013 = 6
- e — Euler's number (e)
- Digit 42,013 = 7
- φ — Golden ratio (φ)
- Digit 42,013 = 9
- √2 — Pythagoras's (√2)
- Digit 42,013 = 9
- ln 2 — Natural log of 2
- Digit 42,013 = 9
- γ — Euler-Mascheroni (γ)
- Digit 42,013 = 6
Also seen as
UTF-8 encoding: EA 90 9D (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.29.
- Address
- 0.0.164.29
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.29
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42013 first appears in π at position 90,269 of the decimal expansion (the 90,269ordinal-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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.