42445772 has 12 divisors (see below), whose sum is σ = 78189720. Its totient is φ = 20105856.

The previous prime is 42445759. The next prime is 42445801. The reversal of 42445772 is 27754424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279173 + ... + 279324.

It is an arithmetic number, because the mean of its divisors is an integer number (6515810).

Almost surely, 2^42445772 is an apocalyptic number.

It is an amenable number.

42445772 is a deficient number, since it is larger than the sum of its proper divisors (35743948).

42445772 is a wasteful number, since it uses less digits than its factorization.

42445772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558520 (or 558518 counting only the distinct ones).

The product of its digits is 62720, while the sum is 35.

The square root of 42445772 is about 6515.0419799108. The cubic root of 42445772 is about 348.8281132651.

The spelling of 42445772 in words is "forty-two million, four hundred forty-five thousand, seven hundred seventy-two".