Number
42,221
42,221 is a prime, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 11
- Digit product
- 32
- Digital root
- 2
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 12,224
- Recamán's sequence
- a(151,181) = 42,221
- Square (n²)
- 1,782,612,841
- Cube (n³)
- 75,263,696,759,861
- Divisor count
- 2
- σ(n) — sum of divisors
- 42,222
- φ(n) — Euler's totient
- 42,220
Primality
42,221 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
42,221
·
84,442
(double)
·
126,663
·
168,884
·
211,105
·
253,326
·
295,547
·
337,768
·
379,989
·
422,210
Sums & aliquot sequence
As a sum of two squares:
14² + 205²
As consecutive integers:
21,110 + 21,111
Representations
- In words
- forty-two thousand two hundred twenty-one
- Ordinal
- 42221st
- Binary
- 1010010011101101
- Octal
- 122355
- Hexadecimal
- 0xA4ED
- Base64
- pO0=
- One's complement
- 23,314 (16-bit)
In other bases
ternary (3)
2010220202
quaternary (4)
22103231
quinary (5)
2322341
senary (6)
523245
septenary (7)
234044
nonary (9)
63822
undecimal (11)
297a3
duodecimal (12)
20525
tridecimal (13)
162aa
tetradecimal (14)
1155b
pentadecimal (15)
c79b
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵μβσκαʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋫·𝋡
- Chinese
- 四萬二千二百二十一
- Chinese (financial)
- 肆萬貳仟貳佰貳拾壹
In other modern scripts
Eastern Arabic
٤٢٢٢١
Devanagari
४२२२१
Bengali
৪২২২১
Tamil
௪௨௨௨௧
Thai
๔๒๒๒๑
Tibetan
༤༢༢༢༡
Khmer
៤២២២១
Lao
໔໒໒໒໑
Burmese
၄၂၂၂၁
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,221 = 4
- e — Euler's number (e)
- Digit 42,221 = 4
- φ — Golden ratio (φ)
- Digit 42,221 = 3
- √2 — Pythagoras's (√2)
- Digit 42,221 = 9
- ln 2 — Natural log of 2
- Digit 42,221 = 5
- γ — Euler-Mascheroni (γ)
- Digit 42,221 = 5
Also seen as
Prime neighborhood
Unicode codepoint
ꓭ
Lisu Letter Gha
U+A4ED
Other letter (Lo)
UTF-8 encoding: EA 93 AD (3 bytes).
Hex color
#00A4ED
RGB(0, 164, 237)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.237.
- Address
- 0.0.164.237
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.237
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Position in π
The digit sequence 42221 first appears in π at position 86,211 of the decimal expansion (the 86,211ordinal-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.