442320544 has 24 divisors (see below), whose sum is σ = 908681760. Its totient is φ = 211544256.

The previous prime is 442320503. The next prime is 442320611. The reversal of 442320544 is 445023244.

It is an unprimeable number.

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, 299754 + ... + 301225.

It is an arithmetic number, because the mean of its divisors is an integer number (37861740).

Almost surely, 2^442320544 is an apocalyptic number.

It is an amenable number.

442320544 is an abundant number, since it is smaller than the sum of its proper divisors (466361216).

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

442320544 is a wasteful number, since it uses less digits than its factorization.

442320544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601012 (or 601004 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 442320544 is about 21031.4180216171. The cubic root of 442320544 is about 761.9252572602.

Adding to 442320544 its reverse (445023244), we get a palindrome (887343788).

The spelling of 442320544 in words is "four hundred forty-two million, three hundred twenty thousand, five hundred forty-four".