42445544 has 32 divisors (see below), whose sum is σ = 85212000. Its totient is φ = 19760832.

The previous prime is 42445523. The next prime is 42445547. The reversal of 42445544 is 44554424.

42445544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42445544.

It is not an unprimeable number, because it can be changed into a prime (42445547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6602 + ... + 11334.

It is an arithmetic number, because the mean of its divisors is an integer number (2662875).

Almost surely, 2^42445544 is an apocalyptic number.

It is an amenable number.

42445544 is an abundant number, since it is smaller than the sum of its proper divisors (42766456).

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

42445544 is a wasteful number, since it uses less digits than its factorization.

42445544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4813 counting only the distinct ones).

The product of its digits is 51200, while the sum is 32.

The square root of 42445544 is about 6515.0244819187. The cubic root of 42445544 is about 348.8274886803.

Adding to 42445544 its reverse (44554424), we get a palindrome (86999968).

The spelling of 42445544 in words is "forty-two million, four hundred forty-five thousand, five hundred forty-four".