442221320404 has 12 divisors (see below), whose sum is σ = 798851417728. Its totient is φ = 213978058200.

The previous prime is 442221320377. The next prime is 442221320531. The reversal of 442221320404 is 404023122244.

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, 1783150362 + ... + 1783150609.

Almost surely, 2^442221320404 is an apocalyptic number.

It is an amenable number.

442221320404 is a deficient number, since it is larger than the sum of its proper divisors (356630097324).

442221320404 is a wasteful number, since it uses less digits than its factorization.

442221320404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566301006 (or 3566301004 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 442221320404 its reverse (404023122244), we get a palindrome (846244442648).

The spelling of 442221320404 in words is "four hundred forty-two billion, two hundred twenty-one million, three hundred twenty thousand, four hundred four".