42308784 has 160 divisors (see below), whose sum is σ = 147133440. Its totient is φ = 11363328.

The previous prime is 42308779. The next prime is 42308803. The reversal of 42308784 is 48780324.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50997 + ... + 51819.

It is an arithmetic number, because the mean of its divisors is an integer number (919584).

Almost surely, 2^42308784 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 42308784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73566720).

42308784 is an abundant number, since it is smaller than the sum of its proper divisors (104824656).

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

42308784 is a wasteful number, since it uses less digits than its factorization.

42308784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 42308784 is about 6504.5202743938. The cubic root of 42308784 is about 348.4524436163.

The spelling of 42308784 in words is "forty-two million, three hundred eight thousand, seven hundred eighty-four".