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Number

42,743

42,743 is a prime, odd.

Arithmetic Number Deficient Number Happy Number Odious Number Pernicious Number Prime Recamán's Sequence Sexy Prime Sophie Germain Prime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
20
Digit product
672
Digital root
2
Palindrome
No
Bit width
16 bits
Reversed
34,724
Recamán's sequence
a(73,106) = 42,743
Square (n²)
1,826,964,049
Cube (n³)
78,089,924,346,407
Divisor count
2
σ(n) — sum of divisors
42,744
φ(n) — Euler's totient
42,742

Primality

42,743 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 42743
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 42,743)
1 × 42743
First multiples
42,743 · 85,486 (double) · 128,229 · 170,972 · 213,715 · 256,458 · 299,201 · 341,944 · 384,687 · 427,430

Sums & aliquot sequence

As consecutive integers: 21,371 + 21,372

Representations

In words
forty-two thousand seven hundred forty-three
Ordinal
42743rd
Binary
1010011011110111
Octal
123367
Hexadecimal
0xA6F7
Base64
pvc=
One's complement
22,792 (16-bit)
In other bases
ternary (3) 2011122002
quaternary (4) 22123313
quinary (5) 2331433
senary (6) 525515
septenary (7) 235421
nonary (9) 64562
undecimal (11) 2a128
duodecimal (12) 2089b
tridecimal (13) 165bc
tetradecimal (14) 11811
pentadecimal (15) c9e8

Historical numeral systems

Babylonian (base 60)
𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian)
͵μβψμγʹ
Mayan (base 20)
𝋥·𝋦·𝋱·𝋣
Chinese
四萬二千七百四十三
Chinese (financial)
肆萬貳仟柒佰肆拾參
In other modern scripts
Eastern Arabic ٤٢٧٤٣ Devanagari ४२७४३ Bengali ৪২৭৪৩ Tamil ௪௨௭௪௩ Thai ๔๒๗๔๓ Tibetan ༤༢༧༤༣ Khmer ៤២៧៤៣ Lao ໔໒໗໔໓ Burmese ၄၂၇၄၃

Digit at this position in famous constants

π — Pi (π)
Digit 42,743 = 2
e — Euler's number (e)
Digit 42,743 = 5
φ — Golden ratio (φ)
Digit 42,743 = 5
√2 — Pythagoras's (√2)
Digit 42,743 = 6
ln 2 — Natural log of 2
Digit 42,743 = 4
γ — Euler-Mascheroni (γ)
Digit 42,743 = 2

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 42,737 (gap of 6)
  • Next prime: 42,751 (gap of 8)

Pair status: sexy with 42737.

Unicode codepoint
Bamum Question Mark
U+A6F7
Other punctuation (Po)

UTF-8 encoding: EA 9B B7 (3 bytes).

Hex color
#00A6F7
RGB(0, 166, 247)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.247.

Address
0.0.166.247
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.166.247

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

Position in π

The digit sequence 42743 first appears in π at position 135,206 of the decimal expansion (the 135,206ordinal-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.