442303524 has 96 divisors (see below), whose sum is σ = 1288707840. Its totient is φ = 130166784.

The previous prime is 442303487. The next prime is 442303529. The reversal of 442303524 is 425303244.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (442303529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25444 + ... + 39140.

It is an arithmetic number, because the mean of its divisors is an integer number (13424040).

Almost surely, 2^442303524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442303524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644353920).

442303524 is an abundant number, since it is smaller than the sum of its proper divisors (846404316).

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

442303524 is a wasteful number, since it uses less digits than its factorization.

442303524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13746 (or 13738 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 442303524 is about 21031.0133849988. The cubic root of 442303524 is about 761.9154844575.

Adding to 442303524 its reverse (425303244), we get a palindrome (867606768).

The spelling of 442303524 in words is "four hundred forty-two million, three hundred three thousand, five hundred twenty-four".