13042499 has 2 divisors, whose sum is σ = 13042500. Its totient is φ = 13042498.

The previous prime is 13042457. The next prime is 13042501. The reversal of 13042499 is 99424031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13042499 is a prime.

It is a Sophie Germain prime.

Together with 13042501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13042409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6521249 + 6521250.

It is an arithmetic number, because the mean of its divisors is an integer number (6521250).

Almost surely, 2^13042499 is an apocalyptic number.

13042499 is a deficient number, since it is larger than the sum of its proper divisors (1).

13042499 is an equidigital number, since it uses as much as digits as its factorization.

13042499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 13042499 is about 3611.4400174999. The cubic root of 13042499 is about 235.3894192218.

The spelling of 13042499 in words is "thirteen million, forty-two thousand, four hundred ninety-nine".