42784916 has 12 divisors (see below), whose sum is σ = 74991840. Its totient is φ = 21358680.

The previous prime is 42784897. The next prime is 42784921. The reversal of 42784916 is 61948724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5480 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (6249320).

Almost surely, 2^42784916 is an apocalyptic number.

It is an amenable number.

42784916 is a deficient number, since it is larger than the sum of its proper divisors (32206924).

42784916 is a wasteful number, since it uses less digits than its factorization.

42784916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16894 (or 16892 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 42784916 is about 6541.0179635895. The cubic root of 42784916 is about 349.7547015915.

The spelling of 42784916 in words is "forty-two million, seven hundred eighty-four thousand, nine hundred sixteen".