442643020 has 12 divisors (see below), whose sum is σ = 929550384. Its totient is φ = 177057200.

The previous prime is 442642987. The next prime is 442643053. The reversal of 442643020 is 20346244.

It is an interprime number because it is at equal distance from previous prime (442642987) and next prime (442643053).

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, 11066056 + ... + 11066095.

It is an arithmetic number, because the mean of its divisors is an integer number (77462532).

Almost surely, 2^442643020 is an apocalyptic number.

It is an amenable number.

442643020 is an abundant number, since it is smaller than the sum of its proper divisors (486907364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442643020 is a wasteful number, since it uses less digits than its factorization.

442643020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22132160 (or 22132158 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 442643020 is about 21039.0831549286. The cubic root of 442643020 is about 762.1103740844.

Adding to 442643020 its reverse (20346244), we get a palindrome (462989264).

The spelling of 442643020 in words is "four hundred forty-two million, six hundred forty-three thousand, twenty".