15342157 has 2 divisors, whose sum is σ = 15342158. Its totient is φ = 15342156.

The previous prime is 15342137. The next prime is 15342167. The reversal of 15342157 is 75124351.

It is a happy number.

15342157 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 can be written as a sum of positive squares in only one way, i.e., 8404201 + 6937956 = 2899^2 + 2634^2 .

It is an emirp because it is prime and its reverse (75124351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15342157 - 2¹⁵ = 15309389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15342137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7671078 + 7671079.

It is an arithmetic number, because the mean of its divisors is an integer number (7671079).

Almost surely, 2^15342157 is an apocalyptic number.

It is an amenable number.

15342157 is a deficient number, since it is larger than the sum of its proper divisors (1).

15342157 is an equidigital number, since it uses as much as digits as its factorization.

15342157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 28.

The square root of 15342157 is about 3916.9065600292. The cubic root of 15342157 is about 248.4823091018.

The spelling of 15342157 in words is "fifteen million, three hundred forty-two thousand, one hundred fifty-seven".