42942879 has 40 divisors (see below), whose sum is σ = 74748960. Its totient is φ = 24058944.

The previous prime is 42942871. The next prime is 42942883. The reversal of 42942879 is 97824924.

It is not a de Polignac number, because 42942879 - 2³ = 42942871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42942871) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29337 + ... + 30765.

It is an arithmetic number, because the mean of its divisors is an integer number (1868724).

Almost surely, 2^42942879 is an apocalyptic number.

42942879 is a deficient number, since it is larger than the sum of its proper divisors (31806081).

42942879 is a wasteful number, since it uses less digits than its factorization.

42942879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1492 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 42942879 is about 6553.0816414875. The cubic root of 42942879 is about 350.1846073737.

The spelling of 42942879 in words is "forty-two million, nine hundred forty-two thousand, eight hundred seventy-nine".