Base | Representation |
---|---|
bin | 1110101011001… |
… | …11111001001101 |
3 | 22120122120201102 |
4 | 13111213321031 |
5 | 223003441231 |
6 | 20114352445 |
7 | 3023260124 |
oct | 725477115 |
9 | 276576642 |
10 | 123108941 |
11 | 6354562a |
12 | 3528b725 |
13 | 1c675037 |
14 | 124c8abb |
15 | ac1bacb |
hex | 7567e4d |
123108941 has 4 divisors (see below), whose sum is σ = 123924384. Its totient is φ = 122293500.
The previous prime is 123108929. The next prime is 123108943. The reversal of 123108941 is 149801321.
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: 149801321 = 523 ⋅286427.
It is a cyclic number.
It is not a de Polignac number, because 123108941 - 218 = 122846797 is a prime.
It is a super-2 number, since 2×1231089412 = 30311622708282962, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (123108943) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407495 + ... + 407796.
It is an arithmetic number, because the mean of its divisors is an integer number (30981096).
Almost surely, 2123108941 is an apocalyptic number.
It is an amenable number.
123108941 is a deficient number, since it is larger than the sum of its proper divisors (815443).
123108941 is an equidigital number, since it uses as much as digits as its factorization.
123108941 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 815442.
The product of its (nonzero) digits is 1728, while the sum is 29.
The square root of 123108941 is about 11095.4468589598. The cubic root of 123108941 is about 497.4657650070.
The spelling of 123108941 in words is "one hundred twenty-three million, one hundred eight thousand, nine hundred forty-one".
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