121,072
121,072 is a composite number, even.
121,072 (one hundred twenty-one thousand seventy-two) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 7 × 23 × 47. Its proper divisors sum to 164,624, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1D8F0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 270,121
- Square (n²)
- 14,658,429,184
- Cube (n³)
- 1,774,725,338,165,248
- Divisor count
- 40
- σ(n) — sum of divisors
- 285,696
- φ(n) — Euler's totient
- 48,576
- Sum of prime factors
- 85
Primality
Prime factorization: 2 4 × 7 × 23 × 47
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√121,072 = [347; (1, 20, 1, 2, 1, 42, 1, 2, 1, 20, 1, 694)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-one thousand seventy-two
- Ordinal
- 121072nd
- Binary
- 11101100011110000
- Octal
- 354360
- Hexadecimal
- 0x1D8F0
- Base64
- Adjw
- One's complement
- 4,294,846,223 (32-bit)
- Scientific notation
- 1.21072 × 10⁵
- As a duration
- 121,072 s = 1 day, 9 hours, 37 minutes, 52 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκαοβʹ
- Mayan (base 20)
- 𝋯·𝋢·𝋭·𝋬
- Chinese
- 一十二萬一千零七十二
- Chinese (financial)
- 壹拾貳萬壹仟零柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 121072, here are decompositions:
- 5 + 121067 = 121072
- 11 + 121061 = 121072
- 53 + 121019 = 121072
- 59 + 121013 = 121072
- 71 + 121001 = 121072
- 131 + 120941 = 121072
- 173 + 120899 = 121072
- 239 + 120833 = 121072
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9D A3 B0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.216.240.
- Address
- 0.1.216.240
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.216.240
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 121,072 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 121072 first appears in π at position 698,048 of the decimal expansion (the 698,048ordinal-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.