42785944 has 8 divisors (see below), whose sum is σ = 80223660. Its totient is φ = 21392968.

The previous prime is 42785909. The next prime is 42785959. The reversal of 42785944 is 44958724.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×42785944² = 3661274007942272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42785944.

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, 2674114 + ... + 2674129.

Almost surely, 2^42785944 is an apocalyptic number.

It is an amenable number.

42785944 is a deficient number, since it is larger than the sum of its proper divisors (37437716).

42785944 is a wasteful number, since it uses less digits than its factorization.

42785944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5348249 (or 5348245 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 42785944 is about 6541.0965441583. The cubic root of 42785944 is about 349.7575027731.

The spelling of 42785944 in words is "forty-two million, seven hundred eighty-five thousand, nine hundred forty-four".