13042649 has 2 divisors, whose sum is σ = 13042650. Its totient is φ = 13042648.

The previous prime is 13042639. The next prime is 13042669. The reversal of 13042649 is 94624031.

13042649 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 can be written as a sum of positive squares in only one way, i.e., 8497225 + 4545424 = 2915^2 + 2132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13042649 is a prime.

It is a super-2 number, since 2×13042649² = 340221385874402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13042619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6521324 + 6521325.

It is an arithmetic number, because the mean of its divisors is an integer number (6521325).

Almost surely, 2^13042649 is an apocalyptic number.

It is an amenable number.

13042649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13042649 is an equidigital number, since it uses as much as digits as its factorization.

13042649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 13042649 is about 3611.4607847795. The cubic root of 13042649 is about 235.3903216122.

The spelling of 13042649 in words is "thirteen million, forty-two thousand, six hundred forty-nine".