42000440444 has 12 divisors (see below), whose sum is σ = 73550343384. Its totient is φ = 20986056624.

The previous prime is 42000440393. The next prime is 42000440477. The reversal of 42000440444 is 44404400024.

It is a happy number.

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, 3534227 + ... + 3546090.

It is an arithmetic number, because the mean of its divisors is an integer number (6129195282).

Almost surely, 2^42000440444 is an apocalyptic number.

It is an amenable number.

42000440444 is a deficient number, since it is larger than the sum of its proper divisors (31549902940).

42000440444 is a wasteful number, since it uses less digits than its factorization.

42000440444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7081804 (or 7081802 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 42000440444 its reverse (44404400024), we get a palindrome (86404840468).

The spelling of 42000440444 in words is "forty-two billion, four hundred forty thousand, four hundred forty-four".