13042517 has 2 divisors, whose sum is σ = 13042518. Its totient is φ = 13042516.

The previous prime is 13042511. The next prime is 13042529. The reversal of 13042517 is 71524031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7349521 + 5692996 = 2711^2 + 2386^2 .

It is a cyclic number.

It is not a de Polignac number, because 13042517 - 2⁴ = 13042501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13042492 and 13042501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13042511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6521258 + 6521259.

It is an arithmetic number, because the mean of its divisors is an integer number (6521259).

Almost surely, 2^13042517 is an apocalyptic number.

It is an amenable number.

13042517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13042517 is an equidigital number, since it uses as much as digits as its factorization.

13042517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 13042517 is about 3611.4425095798. The cubic root of 13042517 is about 235.3895275090.

Adding to 13042517 its reverse (71524031), we get a palindrome (84566548).

The spelling of 13042517 in words is "thirteen million, forty-two thousand, five hundred seventeen".