142,128
142,128 is a composite number, even.
142,128 (one hundred forty-two thousand one hundred twenty-eight) is an even 6-digit number. It is a composite number with 80 divisors, and factors as 2⁴ × 3³ × 7 × 47. Its proper divisors sum to 334,032, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22B30.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 128
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 821,241
- Recamán's sequence
- a(484,571) = 142,128
- Square (n²)
- 20,200,368,384
- Cube (n³)
- 2,871,037,957,681,152
- Divisor count
- 80
- σ(n) — sum of divisors
- 476,160
- φ(n) — Euler's totient
- 39,744
- Sum of prime factors
- 71
Primality
Prime factorization: 2 4 × 3 3 × 7 × 47
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,128 = [376; (1, 752)]
Period length 2 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand one hundred twenty-eight
- Ordinal
- 142128th
- Binary
- 100010101100110000
- Octal
- 425460
- Hexadecimal
- 0x22B30
- Base64
- Aisw
- One's complement
- 4,294,825,167 (32-bit)
- Scientific notation
- 1.42128 × 10⁵
- As a duration
- 142,128 s = 1 day, 15 hours, 28 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβρκηʹ
- Mayan (base 20)
- 𝋱·𝋯·𝋦·𝋨
- Chinese
- 一十四萬二千一百二十八
- Chinese (financial)
- 壹拾肆萬貳仟壹佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142128, here are decompositions:
- 5 + 142123 = 142128
- 17 + 142111 = 142128
- 29 + 142099 = 142128
- 31 + 142097 = 142128
- 61 + 142067 = 142128
- 67 + 142061 = 142128
- 71 + 142057 = 142128
- 79 + 142049 = 142128
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 AC B0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.43.48.
- Address
- 0.2.43.48
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.43.48
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 142,128 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 142128 first appears in π at position 324,088 of the decimal expansion (the 324,088ordinal-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°.