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Number

42,101

42,101 is a prime, odd.

Arithmetic Number Chen Prime Deficient Number Evil Number Prime Pythagorean Prime Recamán's Sequence Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
8
Digit product
0
Digital root
8
Palindrome
No
Bit width
16 bits
Reversed
10,124
Recamán's sequence
a(151,421) = 42,101
Square (n²)
1,772,494,201
Cube (n³)
74,623,778,356,301
Divisor count
2
σ(n) — sum of divisors
42,102
φ(n) — Euler's totient
42,100

Primality

42,101 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 42101
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 42,101)
1 × 42101
First multiples
42,101 · 84,202 (double) · 126,303 · 168,404 · 210,505 · 252,606 · 294,707 · 336,808 · 378,909 · 421,010

Sums & aliquot sequence

As a sum of two squares: 50² + 199²
As consecutive integers: 21,050 + 21,051

Representations

In words
forty-two thousand one hundred one
Ordinal
42101st
Binary
1010010001110101
Octal
122165
Hexadecimal
0xA475
Base64
pHU=
One's complement
23,434 (16-bit)
In other bases
ternary (3) 2010202022
quaternary (4) 22101311
quinary (5) 2321401
senary (6) 522525
septenary (7) 233513
nonary (9) 63668
undecimal (11) 296a4
duodecimal (12) 20445
tridecimal (13) 16217
tetradecimal (14) 114b3
pentadecimal (15) c71b

Historical numeral systems

Babylonian (base 60)
𒌋𒁹 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic
𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓏺
Greek (Milesian)
͵μβραʹ
Mayan (base 20)
𝋥·𝋥·𝋥·𝋡
Chinese
四萬二千一百零一
Chinese (financial)
肆萬貳仟壹佰零壹
In other modern scripts
Eastern Arabic ٤٢١٠١ Devanagari ४२१०१ Bengali ৪২১০১ Tamil ௪௨௧௦௧ Thai ๔๒๑๐๑ Tibetan ༤༢༡༠༡ Khmer ៤២១០១ Lao ໔໒໑໐໑ Burmese ၄၂၁၀၁

Digit at this position in famous constants

π — Pi (π)
Digit 42,101 = 4
e — Euler's number (e)
Digit 42,101 = 6
φ — Golden ratio (φ)
Digit 42,101 = 1
√2 — Pythagoras's (√2)
Digit 42,101 = 0
ln 2 — Natural log of 2
Digit 42,101 = 5
γ — Euler-Mascheroni (γ)
Digit 42,101 = 5

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 42,089 (gap of 12)
  • Next prime: 42,131 (gap of 30)
Unicode codepoint
Yi Syllable Yiet
U+A475
Other letter (Lo)

UTF-8 encoding: EA 91 B5 (3 bytes).

Hex color
#00A475
RGB(0, 164, 117)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.117.

Address
0.0.164.117
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.164.117

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

Position in π

The digit sequence 42101 first appears in π at position 282,141 of the decimal expansion (the 282,141ordinal-suffix:st 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.