21,141
21,141 is a composite number, odd.
21,141 (twenty-one thousand one hundred forty-one) is an odd 5-digit number. It is a composite number with 14 divisors, and factors as 3⁶ × 29. Written other ways, in hexadecimal, 0x5295.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 9
- Digit product
- 8
- Digital root
- 9
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 14,112
- Recamán's sequence
- a(41,557) = 21,141
- Square (n²)
- 446,941,881
- Cube (n³)
- 9,448,798,306,221
- Divisor count
- 14
- σ(n) — sum of divisors
- 32,790
- φ(n) — Euler's totient
- 13,608
- Sum of prime factors
- 47
Primality
Prime factorization: 3 6 × 29
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√21,141 = [145; (2, 1, 1, 72, 10, 72, 1, 1, 2, 290)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- twenty-one thousand one hundred forty-one
- Ordinal
- 21141st
- Binary
- 101001010010101
- Octal
- 51225
- Hexadecimal
- 0x5295
- Base64
- UpU=
- One's complement
- 44,394 (16-bit)
- Scientific notation
- 2.1141 × 10⁴
- As a duration
- 21,141 s = 5 hours, 52 minutes, 21 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓍢𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵καρμαʹ
- Mayan (base 20)
- 𝋢·𝋬·𝋱·𝋡
- Chinese
- 二萬一千一百四十一
- Chinese (financial)
- 貳萬壹仟壹佰肆拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 21,141 = 0
- e — Euler's number (e)
- Digit 21,141 = 9
- φ — Golden ratio (φ)
- Digit 21,141 = 6
- √2 — Pythagoras's (√2)
- Digit 21,141 = 1
- ln 2 — Natural log of 2
- Digit 21,141 = 7
- γ — Euler-Mascheroni (γ)
- Digit 21,141 = 2
Also seen as
UTF-8 encoding: E5 8A 95 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.82.149.
- Address
- 0.0.82.149
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.82.149
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 21141 first appears in π at position 102,570 of the decimal expansion (the 102,570ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.