42016444 has 12 divisors (see below), whose sum is σ = 73790584. Its totient is φ = 20933424.

The previous prime is 42016441. The next prime is 42016453. The reversal of 42016444 is 44461024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42016441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17427 + ... + 19690.

Almost surely, 2^42016444 is an apocalyptic number.

It is an amenable number.

42016444 is a deficient number, since it is larger than the sum of its proper divisors (31774140).

42016444 is a wasteful number, since it uses less digits than its factorization.

42016444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37404 (or 37402 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 42016444 is about 6482.0092563957. The cubic root of 42016444 is about 347.6480234759.

Adding to 42016444 its reverse (44461024), we get a palindrome (86477468).

The spelling of 42016444 in words is "forty-two million, sixteen thousand, four hundred forty-four".