42504784 has 40 divisors (see below), whose sum is σ = 94868928. Its totient is φ = 18071040.

The previous prime is 42504731. The next prime is 42504809. The reversal of 42504784 is 48740524.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13224 + ... + 16120.

Almost surely, 2^42504784 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 42504784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47434464).

42504784 is an abundant number, since it is smaller than the sum of its proper divisors (52364144).

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

42504784 is a wasteful number, since it uses less digits than its factorization.

42504784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043 (or 3037 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 42504784 is about 6519.5693109284. The cubic root of 42504784 is about 348.9896960037.

The spelling of 42504784 in words is "forty-two million, five hundred four thousand, seven hundred eighty-four".