442638075 has 24 divisors (see below), whose sum is σ = 798359616. Its totient is φ = 214612000.

The previous prime is 442638023. The next prime is 442638083. The reversal of 442638075 is 570836244.

It is a happy number.

It is not a de Polignac number, because 442638075 - 2⁷ = 442637947 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267441 + ... + 269090.

It is an arithmetic number, because the mean of its divisors is an integer number (33264984).

Almost surely, 2^442638075 is an apocalyptic number.

442638075 is a deficient number, since it is larger than the sum of its proper divisors (355721541).

442638075 is a wasteful number, since it uses less digits than its factorization.

442638075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536555 (or 536550 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 442638075 is about 21038.9656352208. The cubic root of 442638075 is about 762.1075360941.

The spelling of 442638075 in words is "four hundred forty-two million, six hundred thirty-eight thousand, seventy-five".