915879042 has 64 divisors (see below), whose sum is σ = 2209320960. Its totient is φ = 279562752.

The previous prime is 915879037. The next prime is 915879043. The reversal of 915879042 is 240978519.

It is not an unprimeable number, because it can be changed into a prime (915879043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84018 + ... + 94290.

It is an arithmetic number, because the mean of its divisors is an integer number (34520640).

Almost surely, 2^915879042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 915879042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104660480).

915879042 is an abundant number, since it is smaller than the sum of its proper divisors (1293441918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

915879042 is a wasteful number, since it uses less digits than its factorization.

915879042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10424 (or 10418 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 915879042 is about 30263.4935524635. The cubic root of 915879042 is about 971.1344794851.

The spelling of 915879042 in words is "nine hundred fifteen million, eight hundred seventy-nine thousand, forty-two".