143,220
143,220 is a composite number, even.
143,220 (one hundred forty-three thousand two hundred twenty) is an even 6-digit number. It is a composite number with 96 divisors, and factors as 2² × 3 × 5 × 7 × 11 × 31. Its proper divisors sum to 372,876, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22F74.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 12
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 22,341
- Recamán's sequence
- a(221,976) = 143,220
- Square (n²)
- 20,511,968,400
- Cube (n³)
- 2,937,724,114,248,000
- Divisor count
- 96
- σ(n) — sum of divisors
- 516,096
- φ(n) — Euler's totient
- 28,800
- Sum of prime factors
- 61
Primality
Prime factorization: 2 2 × 3 × 5 × 7 × 11 × 31
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√143,220 = [378; (2, 3, 1, 46, 1, 1, 8, 1, 1, 46, 1, 3, 2, 756)]
Period length 14 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-three thousand two hundred twenty
- Ordinal
- 143220th
- Binary
- 100010111101110100
- Octal
- 427564
- Hexadecimal
- 0x22F74
- Base64
- Ai90
- One's complement
- 4,294,824,075 (32-bit)
- Scientific notation
- 1.4322 × 10⁵
- As a duration
- 143,220 s = 1 day, 15 hours, 47 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρμγσκʹ
- Mayan (base 20)
- 𝋱·𝋲·𝋡·𝋠
- Chinese
- 一十四萬三千二百二十
- Chinese (financial)
- 壹拾肆萬參仟貳佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 143220, here are decompositions:
- 23 + 143197 = 143220
- 43 + 143177 = 143220
- 61 + 143159 = 143220
- 79 + 143141 = 143220
- 83 + 143137 = 143220
- 107 + 143113 = 143220
- 109 + 143111 = 143220
- 113 + 143107 = 143220
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 BD B4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.47.116.
- Address
- 0.2.47.116
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.47.116
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 143,220 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 143220 first appears in π at position 892,804 of the decimal expansion (the 892,804ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.