15342739 has 2 divisors, whose sum is σ = 15342740. Its totient is φ = 15342738.

The previous prime is 15342713. The next prime is 15342749. The reversal of 15342739 is 93724351.

15342739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15342739 - 2⁵ = 15342707 is a prime.

It is not a weakly prime, because it can be changed into another prime (15342749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7671369 + 7671370.

It is an arithmetic number, because the mean of its divisors is an integer number (7671370).

Almost surely, 2^15342739 is an apocalyptic number.

15342739 is a deficient number, since it is larger than the sum of its proper divisors (1).

15342739 is an equidigital number, since it uses as much as digits as its factorization.

15342739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 15342739 is about 3916.9808526466. The cubic root of 15342739 is about 248.4854510953.

The spelling of 15342739 in words is "fifteen million, three hundred forty-two thousand, seven hundred thirty-nine".