442401224 has 16 divisors (see below), whose sum is σ = 847152000. Its totient is φ = 216494032.

The previous prime is 442401209. The next prime is 442401227. The reversal of 442401224 is 422104244.

It is a self number, because there is not a number n which added to its sum of digits gives 442401224.

It is not an unprimeable number, because it can be changed into a prime (442401227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587924 + ... + 588675.

It is an arithmetic number, because the mean of its divisors is an integer number (52947000).

Almost surely, 2^442401224 is an apocalyptic number.

It is an amenable number.

442401224 is a deficient number, since it is larger than the sum of its proper divisors (404750776).

442401224 is a wasteful number, since it uses less digits than its factorization.

442401224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176652 (or 1176648 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 442401224 is about 21033.3360169042. The cubic root of 442401224 is about 761.9715799202.

Adding to 442401224 its reverse (422104244), we get a palindrome (864505468).

The spelling of 442401224 in words is "four hundred forty-two million, four hundred one thousand, two hundred twenty-four".