12942113 has 4 divisors (see below), whose sum is σ = 13087620. Its totient is φ = 12796608.

The previous prime is 12942109. The next prime is 12942121. The reversal of 12942113 is 31124921.

12942113 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8809024 + 4133089 = 2968^2 + 2033^2 .

It is a cyclic number.

It is not a de Polignac number, because 12942113 - 2² = 12942109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12942913) 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, 72620 + ... + 72797.

It is an arithmetic number, because the mean of its divisors is an integer number (3271905).

Almost surely, 2^12942113 is an apocalyptic number.

It is an amenable number.

12942113 is a deficient number, since it is larger than the sum of its proper divisors (145507).

12942113 is an equidigital number, since it uses as much as digits as its factorization.

12942113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145506.

The product of its digits is 432, while the sum is 23.

The square root of 12942113 is about 3597.5148366616. The cubic root of 12942113 is about 234.7839450785.

The spelling of 12942113 in words is "twelve million, nine hundred forty-two thousand, one hundred thirteen".