135,240
135,240 is a composite number, even.
135,240 (one hundred thirty-five thousand two hundred forty) is an even 6-digit number. It is a composite number with 96 divisors, and factors as 2³ × 3 × 5 × 7² × 23. Its proper divisors sum to 357,240, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21048.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 42,531
- Square (n²)
- 18,289,857,600
- Cube (n³)
- 2,473,520,341,824,000
- Divisor count
- 96
- σ(n) — sum of divisors
- 492,480
- φ(n) — Euler's totient
- 29,568
- Sum of prime factors
- 51
Primality
Prime factorization: 2 3 × 3 × 5 × 7 2 × 23
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√135,240 = [367; (1, 2, 1, 734)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-five thousand two hundred forty
- Ordinal
- 135240th
- Binary
- 100001000001001000
- Octal
- 410110
- Hexadecimal
- 0x21048
- Base64
- AhBI
- One's complement
- 4,294,832,055 (32-bit)
- Scientific notation
- 1.3524 × 10⁵
- As a duration
- 135,240 s = 1 day, 13 hours, 34 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλεσμʹ
- Mayan (base 20)
- 𝋰·𝋲·𝋢·𝋠
- Chinese
- 一十三萬五千二百四十
- Chinese (financial)
- 壹拾參萬伍仟貳佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 135240, here are decompositions:
- 19 + 135221 = 135240
- 29 + 135211 = 135240
- 31 + 135209 = 135240
- 43 + 135197 = 135240
- 47 + 135193 = 135240
- 59 + 135181 = 135240
- 67 + 135173 = 135240
- 89 + 135151 = 135240
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 81 88 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.16.72.
- Address
- 0.2.16.72
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.16.72
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 135,240 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°.