142,440
142,440 is a composite number, even.
142,440 (one hundred forty-two thousand four hundred forty) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2³ × 3 × 5 × 1,187. Its proper divisors sum to 285,240, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22C68.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 44,241
- Recamán's sequence
- a(40,192) = 142,440
- Square (n²)
- 20,289,153,600
- Cube (n³)
- 2,889,987,038,784,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 427,680
- φ(n) — Euler's totient
- 37,952
- Sum of prime factors
- 1,201
Primality
Prime factorization: 2 3 × 3 × 5 × 1187
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,440 = [377; (2, 2, 2, 1, 6, 1, 1, 4, 3, 3, 2, 4, 31, 4, 2, 3, 3, 4, 1, 1, 6, 1, 2, 2, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand four hundred forty
- Ordinal
- 142440th
- Binary
- 100010110001101000
- Octal
- 426150
- Hexadecimal
- 0x22C68
- Base64
- Aixo
- One's complement
- 4,294,824,855 (32-bit)
- Scientific notation
- 1.4244 × 10⁵
- As a duration
- 142,440 s = 1 day, 15 hours, 34 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρμβυμʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋢·𝋠
- Chinese
- 一十四萬二千四百四十
- Chinese (financial)
- 壹拾肆萬貳仟肆佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142440, here are decompositions:
- 7 + 142433 = 142440
- 13 + 142427 = 142440
- 19 + 142421 = 142440
- 37 + 142403 = 142440
- 59 + 142381 = 142440
- 71 + 142369 = 142440
- 83 + 142357 = 142440
- 113 + 142327 = 142440
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B1 A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.44.104.
- Address
- 0.2.44.104
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.44.104
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 142,440 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 142440 first appears in π at position 246,091 of the decimal expansion (the 246,091ordinal-suffix:st 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°.