42544444 has 12 divisors (see below), whose sum is σ = 75136600. Its totient is φ = 21076848.

The previous prime is 42544393. The next prime is 42544451. The reversal of 42544444 is 44444524.

It is a zygodrome in base 3.

It is a congruent number.

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, 48354 + ... + 49225.

Almost surely, 2^42544444 is an apocalyptic number.

It is an amenable number.

42544444 is a deficient number, since it is larger than the sum of its proper divisors (32592156).

42544444 is a wasteful number, since it uses less digits than its factorization.

42544444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97692 (or 97690 counting only the distinct ones).

The product of its digits is 40960, while the sum is 31.

The square root of 42544444 is about 6522.6102137105. The cubic root of 42544444 is about 349.0982063674.

Adding to 42544444 its reverse (44444524), we get a palindrome (86988968).

The spelling of 42544444 in words is "forty-two million, five hundred forty-four thousand, four hundred forty-four".