12656243 has 2 divisors, whose sum is σ = 12656244. Its totient is φ = 12656242.

The previous prime is 12656239. The next prime is 12656251. The reversal of 12656243 is 34265621.

12656243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12656243 - 2² = 12656239 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12656213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6328121 + 6328122.

It is an arithmetic number, because the mean of its divisors is an integer number (6328122).

Almost surely, 2^12656243 is an apocalyptic number.

12656243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12656243 is an equidigital number, since it uses as much as digits as its factorization.

12656243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 12656243 is about 3557.5613838696. The cubic root of 12656243 is about 233.0423949823.

The spelling of 12656243 in words is "twelve million, six hundred fifty-six thousand, two hundred forty-three".