315089942 has 4 divisors (see below), whose sum is σ = 472634916. Its totient is φ = 157544970.

The previous prime is 315089923. The next prime is 315089947. The reversal of 315089942 is 249980513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249980513 = 8747 ⋅28579.

It is a self number, because there is not a number n which added to its sum of digits gives 315089942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315089947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78772484 + ... + 78772487.

It is an arithmetic number, because the mean of its divisors is an integer number (118158729).

Almost surely, 2^315089942 is an apocalyptic number.

315089942 is a deficient number, since it is larger than the sum of its proper divisors (157544974).

315089942 is a wasteful number, since it uses less digits than its factorization.

315089942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157544973.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 315089942 is about 17750.7729972528. The cubic root of 315089942 is about 680.4739645495.

The spelling of 315089942 in words is "three hundred fifteen million, eighty-nine thousand, nine hundred forty-two".