12641429 has 2 divisors, whose sum is σ = 12641430. Its totient is φ = 12641428.

The previous prime is 12641411. The next prime is 12641443. The reversal of 12641429 is 92414621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 3247204 = 3065^2 + 1802^2 .

It is a cyclic number.

It is not a de Polignac number, because 12641429 - 2¹² = 12637333 is a 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 (12640429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320714 + 6320715.

It is an arithmetic number, because the mean of its divisors is an integer number (6320715).

Almost surely, 2^12641429 is an apocalyptic number.

It is an amenable number.

12641429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641429 is an equidigital number, since it uses as much as digits as its factorization.

12641429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 12641429 is about 3555.4787300728. The cubic root of 12641429 is about 232.9514349222.

The spelling of 12641429 in words is "twelve million, six hundred forty-one thousand, four hundred twenty-nine".