15942197 has 12 divisors (see below), whose sum is σ = 17603040. Its totient is φ = 14370840.

The previous prime is 15942187. The next prime is 15942211. The reversal of 15942197 is 79124951.

15942197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15942197 - 2⁶ = 15942133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15942197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15942187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83372 + ... + 83562.

It is an arithmetic number, because the mean of its divisors is an integer number (1466920).

Almost surely, 2^15942197 is an apocalyptic number.

It is an amenable number.

15942197 is a deficient number, since it is larger than the sum of its proper divisors (1660843).

15942197 is an equidigital number, since it uses as much as digits as its factorization.

15942197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 233 counting only the distinct ones).

The product of its digits is 22680, while the sum is 38.

The square root of 15942197 is about 3992.7680874301. The cubic root of 15942197 is about 251.6803970892.

The spelling of 15942197 in words is "fifteen million, nine hundred forty-two thousand, one hundred ninety-seven".