Base | Representation |
---|---|
bin | 1110100111111… |
… | …11101011111101 |
3 | 22112211220012211 |
4 | 13103333223331 |
5 | 222401311414 |
6 | 20101300421 |
7 | 3016531534 |
oct | 723775375 |
9 | 275756184 |
10 | 122682109 |
11 | 63283980 |
12 | 35104711 |
13 | 1c555984 |
14 | 1241731b |
15 | ab853c4 |
hex | 74ffafd |
122682109 has 4 divisors (see below), whose sum is σ = 133835040. Its totient is φ = 111529180.
The previous prime is 122682089. The next prime is 122682137. The reversal of 122682109 is 901286221.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 901286221 = 11 ⋅81935111.
It is a cyclic number.
It is not a de Polignac number, because 122682109 - 215 = 122649341 is a prime.
It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (122682169) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5576449 + ... + 5576470.
It is an arithmetic number, because the mean of its divisors is an integer number (33458760).
Almost surely, 2122682109 is an apocalyptic number.
It is an amenable number.
122682109 is a deficient number, since it is larger than the sum of its proper divisors (11152931).
122682109 is a wasteful number, since it uses less digits than its factorization.
122682109 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11152930.
The product of its (nonzero) digits is 3456, while the sum is 31.
The square root of 122682109 is about 11076.1956013787. The cubic root of 122682109 is about 496.8901767657.
The spelling of 122682109 in words is "one hundred twenty-two million, six hundred eighty-two thousand, one hundred nine".
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