42008784 has 20 divisors (see below), whose sum is σ = 108522816. Its totient is φ = 14002912.

The previous prime is 42008777. The next prime is 42008789. The reversal of 42008784 is 48780024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42008789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437544 + ... + 437639.

Almost surely, 2^42008784 is an apocalyptic number.

It is an amenable number.

42008784 is an abundant number, since it is smaller than the sum of its proper divisors (66514032).

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

42008784 is a wasteful number, since it uses less digits than its factorization.

42008784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875194 (or 875188 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 42008784 is about 6481.4183632906. The cubic root of 42008784 is about 347.6268956709.

The spelling of 42008784 in words is "forty-two million, eight thousand, seven hundred eighty-four".