122,420
122,420 is a composite number, even.
122,420 (one hundred twenty-two thousand four hundred twenty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 6,121. Its proper divisors sum to 134,704, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1DE34.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 11
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 24,221
- Square (n²)
- 14,986,656,400
- Cube (n³)
- 1,834,666,476,488,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 257,124
- φ(n) — Euler's totient
- 48,960
- Sum of prime factors
- 6,130
Primality
Prime factorization: 2 2 × 5 × 6121
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√122,420 = [349; (1, 7, 1, 2, 1, 42, 1, 138, 1, 42, 1, 2, 1, 7, 1, 698)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-two thousand four hundred twenty
- Ordinal
- 122420th
- Binary
- 11101111000110100
- Octal
- 357064
- Hexadecimal
- 0x1DE34
- Base64
- Ad40
- One's complement
- 4,294,844,875 (32-bit)
- Scientific notation
- 1.2242 × 10⁵
- As a duration
- 122,420 s = 1 day, 10 hours, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 · 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρκβυκʹ
- Mayan (base 20)
- 𝋯·𝋦·𝋡·𝋠
- Chinese
- 一十二萬二千四百二十
- Chinese (financial)
- 壹拾貳萬貳仟肆佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 122420, here are decompositions:
- 19 + 122401 = 122420
- 31 + 122389 = 122420
- 73 + 122347 = 122420
- 97 + 122323 = 122420
- 157 + 122263 = 122420
- 211 + 122209 = 122420
- 271 + 122149 = 122420
- 367 + 122053 = 122420
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.222.52.
- Address
- 0.1.222.52
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.222.52
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 122,420 and was likely granted around 1871.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.