42393444 has 24 divisors (see below), whose sum is σ = 104737248. Its totient is φ = 13299840.

The previous prime is 42393443. The next prime is 42393473. The reversal of 42393444 is 44439324.

It is a happy number.

It is a super-2 number, since 2×42393444² = 3594408188362272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42393443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103702 + ... + 104109.

It is an arithmetic number, because the mean of its divisors is an integer number (4364052).

Almost surely, 2^42393444 is an apocalyptic number.

It is an amenable number.

42393444 is an abundant number, since it is smaller than the sum of its proper divisors (62343804).

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

42393444 is a wasteful number, since it uses less digits than its factorization.

42393444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207835 (or 207833 counting only the distinct ones).

The product of its digits is 41472, while the sum is 33.

The square root of 42393444 is about 6511.0248041303. The cubic root of 42393444 is about 348.6847068835.

The spelling of 42393444 in words is "forty-two million, three hundred ninety-three thousand, four hundred forty-four".