442798023 has 4 divisors (see below), whose sum is σ = 590397368. Its totient is φ = 295198680.

The previous prime is 442798019. The next prime is 442798033. The reversal of 442798023 is 320897244.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 442798023 - 2² = 442798019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442798033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73799668 + ... + 73799673.

It is an arithmetic number, because the mean of its divisors is an integer number (147599342).

Almost surely, 2^442798023 is an apocalyptic number.

442798023 is a deficient number, since it is larger than the sum of its proper divisors (147599345).

442798023 is a wasteful number, since it uses less digits than its factorization.

442798023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147599344.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 442798023 is about 21042.7665243903. The cubic root of 442798023 is about 762.1993213120.

The spelling of 442798023 in words is "four hundred forty-two million, seven hundred ninety-eight thousand, twenty-three".