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42,228

42,228 is a composite number, even.

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.).
Abundant Number Arithmetic Number Evil Number Harshad / Niven Practical Number Recamán's Sequence Self Number Semiperfect Number

Properties

Parity
Even
Digit count
5
Digit sum
18
Digit product
256
Digital root
9
Palindrome
No
Bit width
16 bits
Reversed
82,224
Recamán's sequence
a(151,167) = 42,228
Square (n²)
1,783,203,984
Cube (n³)
75,301,137,836,352
Divisor count
48
σ(n) — sum of divisors
120,960
φ(n) — Euler's totient
12,672
Sum of prime factors
53

Primality

Prime factorization: 2 2 × 3 3 × 17 × 23

Nearest primes: 42,227 (−1) · 42,239 (+11)

Divisors & multiples

All divisors (48)
1 · 2 · 3 · 4 · 6 · 9 · 12 · 17 · 18 · 23 · 27 · 34 · 36 · 46 · 51 · 54 · 68 · 69 · 92 · 102 · 108 · 138 · 153 · 204 · 207 · 276 · 306 · 391 · 414 · 459 · 612 · 621 · 782 · 828 · 918 · 1173 · 1242 · 1564 · 1836 · 2346 · 2484 · 3519 · 4692 · 7038 · 10557 · 14076 · 21114 (half) · 42228
Aliquot sum (sum of proper divisors): 78,732
Factor pairs (a × b = 42,228)
1 × 42228
2 × 21114
3 × 14076
4 × 10557
6 × 7038
9 × 4692
12 × 3519
17 × 2484
18 × 2346
23 × 1836
27 × 1564
34 × 1242
36 × 1173
46 × 918
51 × 828
54 × 782
68 × 621
69 × 612
92 × 459
102 × 414
108 × 391
138 × 306
153 × 276
204 × 207
First multiples
42,228 · 84,456 (double) · 126,684 · 168,912 · 211,140 · 253,368 · 295,596 · 337,824 · 380,052 · 422,280

Sums & aliquot sequence

As consecutive integers: 14,075 + 14,076 + 14,077 5,275 + 5,276 + … + 5,282 4,688 + 4,689 + … + 4,696 2,476 + 2,477 + … + 2,492
Aliquot sequence: 42,228 78,732 127,936 126,064 118,216 135,224 118,336 122,075 37,885 7,583 1 0 — terminates at zero

Representations

In words
forty-two thousand two hundred twenty-eight
Ordinal
42228th
Binary
1010010011110100
Octal
122364
Hexadecimal
0xA4F4
Base64
pPQ=
One's complement
23,307 (16-bit)
In other bases
ternary (3) 2010221000
quaternary (4) 22103310
quinary (5) 2322403
senary (6) 523300
septenary (7) 234054
nonary (9) 63830
undecimal (11) 297aa
duodecimal (12) 20530
tridecimal (13) 162b4
tetradecimal (14) 11564
pentadecimal (15) c7a3

Historical numeral systems

Babylonian (base 60)
𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵μβσκηʹ
Mayan (base 20)
𝋥·𝋥·𝋫·𝋨
Chinese
四萬二千二百二十八
Chinese (financial)
肆萬貳仟貳佰貳拾捌
In other modern scripts
Eastern Arabic ٤٢٢٢٨ Devanagari ४२२२८ Bengali ৪২২২৮ Tamil ௪௨௨௨௮ Thai ๔๒๒๒๘ Tibetan ༤༢༢༢༨ Khmer ៤២២២៨ Lao ໔໒໒໒໘ Burmese ၄၂၂၂၈

Digit at this position in famous constants

π — Pi (π)
Digit 42,228 = 9
e — Euler's number (e)
Digit 42,228 = 8
φ — Golden ratio (φ)
Digit 42,228 = 7
√2 — Pythagoras's (√2)
Digit 42,228 = 7
ln 2 — Natural log of 2
Digit 42,228 = 4
γ — Euler-Mascheroni (γ)
Digit 42,228 = 6

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42228, here are decompositions:

  • 5 + 42223 = 42228
  • 7 + 42221 = 42228
  • 19 + 42209 = 42228
  • 31 + 42197 = 42228
  • 41 + 42187 = 42228
  • 47 + 42181 = 42228
  • 59 + 42169 = 42228
  • 71 + 42157 = 42228

Showing the first eight; more decompositions exist.

Unicode codepoint
Lisu Letter U
U+A4F4
Other letter (Lo)

UTF-8 encoding: EA 93 B4 (3 bytes).

Hex color
#00A4F4
RGB(0, 164, 244)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.244.

Address
0.0.164.244
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.164.244

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

Position in π

The digit sequence 42228 first appears in π at position 98,559 of the decimal expansion (the 98,559ordinal-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.