12135967 has 2 divisors, whose sum is σ = 12135968. Its totient is φ = 12135966.

The previous prime is 12135941. The next prime is 12135979. The reversal of 12135967 is 76953121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12135967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12135997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067983 + 6067984.

It is an arithmetic number, because the mean of its divisors is an integer number (6067984).

Almost surely, 2^12135967 is an apocalyptic number.

12135967 is a deficient number, since it is larger than the sum of its proper divisors (1).

12135967 is an equidigital number, since it uses as much as digits as its factorization.

12135967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 12135967 is about 3483.6714827894. The cubic root of 12135967 is about 229.8042884589.

The spelling of 12135967 in words is "twelve million, one hundred thirty-five thousand, nine hundred sixty-seven".