42879642 has 16 divisors (see below), whose sum is σ = 92356320. Its totient is φ = 13193712.

The previous prime is 42879623. The next prime is 42879647. The reversal of 42879642 is 24697824.

It is a junction number, because it is equal to n+sod(n) for n = 42879594 and 42879603.

It is not an unprimeable number, because it can be changed into a prime (42879647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274792 + ... + 274947.

It is an arithmetic number, because the mean of its divisors is an integer number (5772270).

Almost surely, 2^42879642 is an apocalyptic number.

42879642 is an abundant number, since it is smaller than the sum of its proper divisors (49476678).

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

42879642 is a wasteful number, since it uses less digits than its factorization.

42879642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549757.

The product of its digits is 193536, while the sum is 42.

The square root of 42879642 is about 6548.2548820277. The cubic root of 42879642 is about 350.0126308367.

The spelling of 42879642 in words is "forty-two million, eight hundred seventy-nine thousand, six hundred forty-two".