138,075
138,075 is a composite number, odd.
138,075 (one hundred thirty-eight thousand seventy-five) is an odd 6-digit number. It is a composite number with 24 divisors, and factors as 3 × 5² × 7 × 263. It is the 525th triangular number. Written other ways, in hexadecimal, 0x21B5B.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 570,831
- Recamán's sequence
- a(492,677) = 138,075
- Square (n²)
- 19,064,705,625
- Cube (n³)
- 2,632,359,229,171,875
- Divisor count
- 24
- σ(n) — sum of divisors
- 261,888
- φ(n) — Euler's totient
- 62,880
- Sum of prime factors
- 283
Primality
Prime factorization: 3 × 5 2 × 7 × 263
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,075 = [371; (1, 1, 2, 2, 5, 1, 4, 1, 4, 1, 5, 2, 2, 1, 1, 742)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand seventy-five
- Ordinal
- 138075th
- Binary
- 100001101101011011
- Octal
- 415533
- Hexadecimal
- 0x21B5B
- Base64
- Ahtb
- One's complement
- 4,294,829,220 (32-bit)
- Scientific notation
- 1.38075 × 10⁵
- As a duration
- 138,075 s = 1 day, 14 hours, 21 minutes, 15 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹 𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληοεʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋣·𝋯
- Chinese
- 一十三萬八千零七十五
- Chinese (financial)
- 壹拾參萬捌仟零柒拾伍
Also seen as
UTF-8 encoding: F0 A1 AD 9B (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.91.
- Address
- 0.2.27.91
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.91
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 138,075 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 138075 first appears in π at position 203,086 of the decimal expansion (the 203,086ordinal-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
- Triangular numbers — 1, 3, 6, 10, 15 … the counting numbers stacked into triangles, and Gauss's famous shortcut for summing them.
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.