143,440
143,440 is a composite number, even.
143,440 (one hundred forty-three thousand four hundred forty) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 5 × 11 × 163. Its proper divisors sum to 222,608, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x23050.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 44,341
- Recamán's sequence
- a(221,536) = 143,440
- Square (n²)
- 20,575,033,600
- Cube (n³)
- 2,951,282,819,584,000
- Divisor count
- 40
- σ(n) — sum of divisors
- 366,048
- φ(n) — Euler's totient
- 51,840
- Sum of prime factors
- 187
Primality
Prime factorization: 2 4 × 5 × 11 × 163
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√143,440 = [378; (1, 2, 1, 3, 2, 1, 9, 3, 1, 1, 1, 83, 1, 1, 9, 11, 1, 2, 1, 2, 2, 2, 3, 9, …)]
Period length 50 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-three thousand four hundred forty
- Ordinal
- 143440th
- Binary
- 100011000001010000
- Octal
- 430120
- Hexadecimal
- 0x23050
- Base64
- AjBQ
- One's complement
- 4,294,823,855 (32-bit)
- Scientific notation
- 1.4344 × 10⁵
- As a duration
- 143,440 s = 1 day, 15 hours, 50 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρμγυμʹ
- Mayan (base 20)
- 𝋱·𝋲·𝋬·𝋠
- Chinese
- 一十四萬三千四百四十
- Chinese (financial)
- 壹拾肆萬參仟肆佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 143440, here are decompositions:
- 53 + 143387 = 143440
- 83 + 143357 = 143440
- 107 + 143333 = 143440
- 149 + 143291 = 143440
- 179 + 143261 = 143440
- 191 + 143249 = 143440
- 197 + 143243 = 143440
- 263 + 143177 = 143440
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A3 81 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.48.80.
- Address
- 0.2.48.80
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.48.80
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 143,440 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 143440 first appears in π at position 699,328 of the decimal expansion (the 699,328ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.