121,984
121,984 is a composite number, even.
121,984 (one hundred twenty-one thousand nine hundred eighty-four) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2⁷ × 953. Written other ways, in hexadecimal, 0x1DC80.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 576
- Digital root
- 7
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 489,121
- Square (n²)
- 14,880,096,256
- Cube (n³)
- 1,815,133,661,691,904
- Divisor count
- 16
- σ(n) — sum of divisors
- 243,270
- φ(n) — Euler's totient
- 60,928
- Sum of prime factors
- 967
Primality
Prime factorization: 2 7 × 953
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√121,984 = [349; (3, 1, 4, 2, 2, 1, 3, 1, 10, 1, 5, 1, 6, 2, 99, 3, 10, 1, 1, 2, 1, 1, 5, 1, …)]
Representations
- In words
- one hundred twenty-one thousand nine hundred eighty-four
- Ordinal
- 121984th
- Binary
- 11101110010000000
- Octal
- 356200
- Hexadecimal
- 0x1DC80
- Base64
- AdyA
- One's complement
- 4,294,845,311 (32-bit)
- Scientific notation
- 1.21984 × 10⁵
- As a duration
- 121,984 s = 1 day, 9 hours, 53 minutes, 4 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκαϡπδʹ
- Mayan (base 20)
- 𝋯·𝋤·𝋳·𝋤
- Chinese
- 一十二萬一千九百八十四
- Chinese (financial)
- 壹拾貳萬壹仟玖佰捌拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 121984, here are decompositions:
- 17 + 121967 = 121984
- 47 + 121937 = 121984
- 53 + 121931 = 121984
- 101 + 121883 = 121984
- 131 + 121853 = 121984
- 197 + 121787 = 121984
- 257 + 121727 = 121984
- 263 + 121721 = 121984
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.220.128.
- Address
- 0.1.220.128
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.220.128
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 121,984 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 121984 first appears in π at position 27,590 of the decimal expansion (the 27,590ordinal-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.