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138,441

138,441 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.).

138,441 (one hundred thirty-eight thousand four hundred forty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 3 × 46,147. Written other ways, in hexadecimal, 0x21CC9.

Arithmetic Number Cube-Free Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree

Interestingness

Properties

Parity
Odd
Digit count
6
Digit sum
21
Digit product
384
Digital root
3
Palindrome
No
Bit width
18 bits
Reversed
144,831
Recamán's sequence
a(491,945) = 138,441
Square (n²)
19,165,910,481
Cube (n³)
2,653,347,812,900,121
Divisor count
4
σ(n) — sum of divisors
184,592
φ(n) — Euler's totient
92,292
Sum of prime factors
46,150

Primality

Prime factorization: 3 × 46147

Nearest primes: 138,433 (−8) · 138,449 (+8)

Divisors & multiples

All divisors (4)
1 · 3 · 46147 · 138441
Aliquot sum (sum of proper divisors): 46,151
Factor pairs (a × b = 138,441)
1 × 138441
3 × 46147
First multiples
138,441 · 276,882 (double) · 415,323 · 553,764 · 692,205 · 830,646 · 969,087 · 1,107,528 · 1,245,969 · 1,384,410

Sums & aliquot sequence

As consecutive integers: 69,220 + 69,221 46,146 + 46,147 + 46,148 23,071 + 23,072 + 23,073 + 23,074 + 23,075 + 23,076
Aliquot sequence: 138,441 46,151 9,529 747 345 231 153 81 40 50 43 1 0 — terminates at zero

Continued fraction of √n

√138,441 = [372; (13, 18, 1, 1, 8, 1, 3, 1, 2, 1, 1, 1, 92, 2, 1, 1, 1, 1, 148, 4, 1, 1, 1, 4, …)]

Representations

In words
one hundred thirty-eight thousand four hundred forty-one
Ordinal
138441st
Binary
100001110011001001
Octal
416311
Hexadecimal
0x21CC9
Base64
AhzJ
One's complement
4,294,828,854 (32-bit)
Scientific notation
1.38441 × 10⁵
As a duration
138,441 s = 1 day, 14 hours, 27 minutes, 21 seconds
In other bases
ternary (3) 21000220110
quaternary (4) 201303021
quinary (5) 13412231
senary (6) 2544533
septenary (7) 1114422
nonary (9) 230813
undecimal (11) 95016
duodecimal (12) 68149
tridecimal (13) 4b024
tetradecimal (14) 38649
pentadecimal (15) 2b046

As an angle

138,441° = 384 × 360° + 201°
201° ≈ 3.508 rad
Compass bearing: SSW (south-southwest)

Historical numeral systems

Babylonian (base 60)
𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹
Egyptian hieroglyphic
𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺
Greek (Milesian)
͵ρληυμαʹ
Mayan (base 20)
𝋱·𝋦·𝋢·𝋡
Chinese
一十三萬八千四百四十一
Chinese (financial)
壹拾參萬捌仟肆佰肆拾壹
In other modern scripts
Eastern Arabic ١٣٨٤٤١ Devanagari १३८४४१ Bengali ১৩৮৪৪১ Tamil ௧௩௮௪௪௧ Thai ๑๓๘๔๔๑ Tibetan ༡༣༨༤༤༡ Khmer ១៣៨៤៤១ Lao ໑໓໘໔໔໑ Burmese ၁၃၈၄၄၁

Also seen as

Unicode codepoint
𡳉
CJK Unified Ideograph-21Cc9
U+21CC9
Other letter (Lo)

UTF-8 encoding: F0 A1 B3 89 (4 bytes).

Hex color
#021CC9
RGB(2, 28, 201)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.201.

Address
0.2.28.201
Class
reserved
IPv4-mapped IPv6
::ffff:0.2.28.201

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

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 138,441 and was likely granted around 1872.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Position in π

The digit sequence 138441 first appears in π at position 789,287 of the decimal expansion (the 789,287ordinal-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.

Related reading

  • Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.