142,420
142,420 is a composite number, even.
142,420 (one hundred forty-two thousand four hundred twenty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 7,121. Its proper divisors sum to 156,704, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22C54.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 24,241
- Recamán's sequence
- a(40,152) = 142,420
- Square (n²)
- 20,283,456,400
- Cube (n³)
- 2,888,769,860,488,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 299,124
- φ(n) — Euler's totient
- 56,960
- Sum of prime factors
- 7,130
Primality
Prime factorization: 2 2 × 5 × 7121
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,420 = [377; (2, 1, 1, 2, 4, 1, 5, 1, 67, 1, 3, 4, 1, 4, 2, 1, 1, 8, 1, 5, 2, 1, 12, 9, …)]
Representations
- In words
- one hundred forty-two thousand four hundred twenty
- Ordinal
- 142420th
- Binary
- 100010110001010100
- Octal
- 426124
- Hexadecimal
- 0x22C54
- Base64
- AixU
- One's complement
- 4,294,824,875 (32-bit)
- Scientific notation
- 1.4242 × 10⁵
- As a duration
- 142,420 s = 1 day, 15 hours, 33 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρμβυκʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋡·𝋠
- Chinese
- 一十四萬二千四百二十
- Chinese (financial)
- 壹拾肆萬貳仟肆佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142420, here are decompositions:
- 17 + 142403 = 142420
- 29 + 142391 = 142420
- 101 + 142319 = 142420
- 149 + 142271 = 142420
- 197 + 142223 = 142420
- 227 + 142193 = 142420
- 251 + 142169 = 142420
- 263 + 142157 = 142420
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B1 94 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.44.84.
- Address
- 0.2.44.84
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.44.84
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 142,420 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 142420 first appears in π at position 454,580 of the decimal expansion (the 454,580ordinal-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.