42018784 has 12 divisors (see below), whose sum is σ = 82724544. Its totient is φ = 21009376.

The previous prime is 42018763. The next prime is 42018803. The reversal of 42018784 is 48781024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656512 + ... + 656575.

It is an arithmetic number, because the mean of its divisors is an integer number (6893712).

Almost surely, 2^42018784 is an apocalyptic number.

It is an amenable number.

42018784 is a deficient number, since it is larger than the sum of its proper divisors (40705760).

42018784 is a wasteful number, since it uses less digits than its factorization.

42018784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313097 (or 1313089 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 42018784 is about 6482.1897534707. The cubic root of 42018784 is about 347.6544771497.

The spelling of 42018784 in words is "forty-two million, eighteen thousand, seven hundred eighty-four".