126,420
126,420 is a composite number, even.
126,420 (one hundred twenty-six thousand four hundred twenty) is an even 6-digit number. It is a composite number with 72 divisors, and factors as 2² × 3 × 5 × 7² × 43. Its proper divisors sum to 294,924, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1EDD4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 24,621
- Square (n²)
- 15,982,016,400
- Cube (n³)
- 2,020,446,513,288,000
- Divisor count
- 72
- σ(n) — sum of divisors
- 421,344
- φ(n) — Euler's totient
- 28,224
- Sum of prime factors
- 69
Primality
Prime factorization: 2 2 × 3 × 5 × 7 2 × 43
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√126,420 = [355; (1, 1, 3, 1, 34, 1, 3, 1, 1, 710)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-six thousand four hundred twenty
- Ordinal
- 126420th
- Binary
- 11110110111010100
- Octal
- 366724
- Hexadecimal
- 0x1EDD4
- Base64
- Ae3U
- One's complement
- 4,294,840,875 (32-bit)
- Scientific notation
- 1.2642 × 10⁵
- As a duration
- 126,420 s = 1 day, 11 hours, 7 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρκϛυκʹ
- Mayan (base 20)
- 𝋯·𝋰·𝋡·𝋠
- Chinese
- 一十二萬六千四百二十
- Chinese (financial)
- 壹拾貳萬陸仟肆佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 126420, here are decompositions:
- 23 + 126397 = 126420
- 61 + 126359 = 126420
- 71 + 126349 = 126420
- 79 + 126341 = 126420
- 83 + 126337 = 126420
- 97 + 126323 = 126420
- 103 + 126317 = 126420
- 109 + 126311 = 126420
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.237.212.
- Address
- 0.1.237.212
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.237.212
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 126,420 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.