13242689 has 2 divisors, whose sum is σ = 13242690. Its totient is φ = 13242688.

The previous prime is 13242683. The next prime is 13242701. The reversal of 13242689 is 98624231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13082689 + 160000 = 3617^2 + 400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13242689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13242683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621344 + 6621345.

It is an arithmetic number, because the mean of its divisors is an integer number (6621345).

Almost surely, 2^13242689 is an apocalyptic number.

It is an amenable number.

13242689 is a deficient number, since it is larger than the sum of its proper divisors (1).

13242689 is an equidigital number, since it uses as much as digits as its factorization.

13242689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 13242689 is about 3639.0505629903. The cubic root of 13242689 is about 236.5876442737.

It can be divided in two parts, 13242 and 689, that added together give a palindrome (13931).

The spelling of 13242689 in words is "thirteen million, two hundred forty-two thousand, six hundred eighty-nine".