15942961 has 4 divisors (see below), whose sum is σ = 16026624. Its totient is φ = 15859300.

The previous prime is 15942947. The next prime is 15942977. The reversal of 15942961 is 16924951.

15942961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16924951 = 29 ⋅583619.

It is a cyclic number.

It is not a de Polignac number, because 15942961 - 2⁷ = 15942833 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 15942961.

It is not an unprimeable number, because it can be changed into a prime (15942931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41545 + ... + 41926.

It is an arithmetic number, because the mean of its divisors is an integer number (4006656).

Almost surely, 2^15942961 is an apocalyptic number.

It is an amenable number.

15942961 is a deficient number, since it is larger than the sum of its proper divisors (83663).

15942961 is an equidigital number, since it uses as much as digits as its factorization.

15942961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83662.

The product of its digits is 19440, while the sum is 37.

The square root of 15942961 is about 3992.8637592585. The cubic root of 15942961 is about 251.6844174625.

The spelling of 15942961 in words is "fifteen million, nine hundred forty-two thousand, nine hundred sixty-one".