135,138
135,138 is a composite number, even.
135,138 (one hundred thirty-five thousand one hundred thirty-eight) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 3 × 101 × 223. Its proper divisors sum to 139,038, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20FE2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 360
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 831,531
- Square (n²)
- 18,262,279,044
- Cube (n³)
- 2,467,927,865,448,072
- Divisor count
- 16
- σ(n) — sum of divisors
- 274,176
- φ(n) — Euler's totient
- 44,400
- Sum of prime factors
- 329
Primality
Prime factorization: 2 × 3 × 101 × 223
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√135,138 = [367; (1, 1, 1, 1, 2, 1, 31, 4, 10, 9, 3, 21, 1, 22, 1, 3, 5, 8, 1, 3, 2, 5, 1, 1, …)]
Period length 52 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-five thousand one hundred thirty-eight
- Ordinal
- 135138th
- Binary
- 100000111111100010
- Octal
- 407742
- Hexadecimal
- 0x20FE2
- Base64
- Ag/i
- One's complement
- 4,294,832,157 (32-bit)
- Scientific notation
- 1.35138 × 10⁵
- As a duration
- 135,138 s = 1 day, 13 hours, 32 minutes, 18 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλερληʹ
- Mayan (base 20)
- 𝋰·𝋱·𝋰·𝋲
- Chinese
- 一十三萬五千一百三十八
- Chinese (financial)
- 壹拾參萬伍仟壹佰參拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 135138, here are decompositions:
- 7 + 135131 = 135138
- 19 + 135119 = 135138
- 37 + 135101 = 135138
- 61 + 135077 = 135138
- 79 + 135059 = 135138
- 89 + 135049 = 135138
- 109 + 135029 = 135138
- 131 + 135007 = 135138
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 BF A2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.15.226.
- Address
- 0.2.15.226
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.15.226
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 135,138 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.