442443003021 has 12 divisors (see below), whose sum is σ = 640567137600. Its totient is φ = 294277632840.

The previous prime is 442443003019. The next prime is 442443003071. The reversal of 442443003021 is 120300344244.

It is a happy number.

It is not a de Polignac number, because 442443003021 - 2¹ = 442443003019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442443003001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57026671 + ... + 57034428.

It is an arithmetic number, because the mean of its divisors is an integer number (53380594800).

Almost surely, 2^442443003021 is an apocalyptic number.

It is an amenable number.

442443003021 is a deficient number, since it is larger than the sum of its proper divisors (198124134579).

442443003021 is a wasteful number, since it uses less digits than its factorization.

442443003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114061536 (or 114061533 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 442443003021 its reverse (120300344244), we get a palindrome (562743347265).

The spelling of 442443003021 in words is "four hundred forty-two billion, four hundred forty-three million, three thousand, twenty-one".