42393784 has 32 divisors (see below), whose sum is σ = 87829920. Its totient is φ = 19081216.

The previous prime is 42393779. The next prime is 42393797. The reversal of 42393784 is 48739324.

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 7 ways as a sum of consecutive naturals, for example, 3649 + ... + 9904.

It is an arithmetic number, because the mean of its divisors is an integer number (2744685).

Almost surely, 2^42393784 is an apocalyptic number.

It is an amenable number.

42393784 is an abundant number, since it is smaller than the sum of its proper divisors (45436136).

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

42393784 is a wasteful number, since it uses less digits than its factorization.

42393784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13599 (or 13595 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 42393784 is about 6511.0509136391. The cubic root of 42393784 is about 348.6856390440.

The spelling of 42393784 in words is "forty-two million, three hundred ninety-three thousand, seven hundred eighty-four".