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42,161

42,161 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Arithmetic Number Deficient Number Odious Number Pernicious Number Recamán's Sequence Sphenic Number Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
14
Digit product
48
Digital root
5
Palindrome
No
Bit width
16 bits
Reversed
16,124
Recamán's sequence
a(151,301) = 42,161
Square (n²)
1,777,549,921
Cube (n³)
74,943,282,219,281
Divisor count
8
σ(n) — sum of divisors
50,880
φ(n) — Euler's totient
34,128
Sum of prime factors
343

Primality

Prime factorization: 7 × 19 × 317

Nearest primes: 42,157 (−4) · 42,169 (+8)

Divisors & multiples

All divisors (8)
1 · 7 · 19 · 133 · 317 · 2219 · 6023 · 42161
Aliquot sum (sum of proper divisors): 8,719
Factor pairs (a × b = 42,161)
1 × 42161
7 × 6023
19 × 2219
133 × 317
First multiples
42,161 · 84,322 (double) · 126,483 · 168,644 · 210,805 · 252,966 · 295,127 · 337,288 · 379,449 · 421,610

Sums & aliquot sequence

As consecutive integers: 21,080 + 21,081 6,020 + 6,021 + … + 6,026 3,005 + 3,006 + … + 3,018 2,210 + 2,211 + … + 2,228
Aliquot sequence: 42,161 8,719 1 0 — terminates at zero

Representations

In words
forty-two thousand one hundred sixty-one
Ordinal
42161st
Binary
1010010010110001
Octal
122261
Hexadecimal
0xA4B1
Base64
pLE=
One's complement
23,374 (16-bit)
In other bases
ternary (3) 2010211112
quaternary (4) 22102301
quinary (5) 2322121
senary (6) 523105
septenary (7) 233630
nonary (9) 63745
undecimal (11) 29749
duodecimal (12) 20495
tridecimal (13) 16262
tetradecimal (14) 11517
pentadecimal (15) c75b

Historical numeral systems

Babylonian (base 60)
𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic
𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian)
͵μβρξαʹ
Mayan (base 20)
𝋥·𝋥·𝋨·𝋡
Chinese
四萬二千一百六十一
Chinese (financial)
肆萬貳仟壹佰陸拾壹
In other modern scripts
Eastern Arabic ٤٢١٦١ Devanagari ४२१६१ Bengali ৪২১৬১ Tamil ௪௨௧௬௧ Thai ๔๒๑๖๑ Tibetan ༤༢༡༦༡ Khmer ៤២១៦១ Lao ໔໒໑໖໑ Burmese ၄၂၁၆၁

Digit at this position in famous constants

π — Pi (π)
Digit 42,161 = 4
e — Euler's number (e)
Digit 42,161 = 8
φ — Golden ratio (φ)
Digit 42,161 = 6
√2 — Pythagoras's (√2)
Digit 42,161 = 1
ln 2 — Natural log of 2
Digit 42,161 = 6
γ — Euler-Mascheroni (γ)
Digit 42,161 = 4

Also seen as

Unicode codepoint
Yi Radical Vep
U+A4B1
Other symbol (So)

UTF-8 encoding: EA 92 B1 (3 bytes).

Hex color
#00A4B1
RGB(0, 164, 177)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.177.

Address
0.0.164.177
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.164.177

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 42161 first appears in π at position 6,795 of the decimal expansion (the 6,795ordinal-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.