12942791 has 2 divisors, whose sum is σ = 12942792. Its totient is φ = 12942790.

The previous prime is 12942751. The next prime is 12942799. The reversal of 12942791 is 19724921.

12942791 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19724921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12942791 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12942799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6471395 + 6471396.

It is an arithmetic number, because the mean of its divisors is an integer number (6471396).

Almost surely, 2^12942791 is an apocalyptic number.

12942791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12942791 is an equidigital number, since it uses as much as digits as its factorization.

12942791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 35.

The square root of 12942791 is about 3597.6090671445. The cubic root of 12942791 is about 234.7880448916.

The spelling of 12942791 in words is "twelve million, nine hundred forty-two thousand, seven hundred ninety-one".