42879744 has 108 divisors (see below), whose sum is σ = 127226736. Its totient is φ = 13879296.

The previous prime is 42879737. The next prime is 42879773. The reversal of 42879744 is 44797824.

It is a self number, because there is not a number n which added to its sum of digits gives 42879744.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84997 + ... + 85499.

Almost surely, 2^42879744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42879744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63613368).

42879744 is an abundant number, since it is smaller than the sum of its proper divisors (84346992).

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

42879744 is a wasteful number, since it uses less digits than its factorization.

42879744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 545 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 42879744 is about 6548.2626703577. The cubic root of 42879744 is about 350.0129083675.

The spelling of 42879744 in words is "forty-two million, eight hundred seventy-nine thousand, seven hundred forty-four".