121,472
121,472 is a composite number, even.
121,472 (one hundred twenty-one thousand four hundred seventy-two) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2⁷ × 13 × 73. Its proper divisors sum to 142,708, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1DA80.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 112
- Digital root
- 8
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 274,121
- Square (n²)
- 14,755,446,784
- Cube (n³)
- 1,792,373,631,746,048
- Divisor count
- 32
- σ(n) — sum of divisors
- 264,180
- φ(n) — Euler's totient
- 55,296
- Sum of prime factors
- 100
Primality
Prime factorization: 2 7 × 13 × 73
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√121,472 = [348; (1, 1, 8, 3, 10, 1, 1, 3, 30, 43, 1, 1, 7, 14, 10, 1, 4, 1, 1, 2, 1, 1, 1, 173, …)]
Period length 48 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-one thousand four hundred seventy-two
- Ordinal
- 121472nd
- Binary
- 11101101010000000
- Octal
- 355200
- Hexadecimal
- 0x1DA80
- Base64
- AdqA
- One's complement
- 4,294,845,823 (32-bit)
- Scientific notation
- 1.21472 × 10⁵
- As a duration
- 121,472 s = 1 day, 9 hours, 44 minutes, 32 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκαυοβʹ
- Mayan (base 20)
- 𝋯·𝋣·𝋭·𝋬
- Chinese
- 一十二萬一千四百七十二
- Chinese (financial)
- 壹拾貳萬壹仟肆佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 121472, here are decompositions:
- 3 + 121469 = 121472
- 19 + 121453 = 121472
- 31 + 121441 = 121472
- 103 + 121369 = 121472
- 139 + 121333 = 121472
- 151 + 121321 = 121472
- 163 + 121309 = 121472
- 181 + 121291 = 121472
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9D AA 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.218.128.
- Address
- 0.1.218.128
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.218.128
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 121,472 and was likely granted around 1871.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 121472 first appears in π at position 4,559 of the decimal expansion (the 4,559ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.