442630132 has 72 divisors (see below), whose sum is σ = 954344160. Its totient is φ = 178799040.

The previous prime is 442630087. The next prime is 442630141. The reversal of 442630132 is 231036244.

It is a junction number, because it is equal to n+sod(n) for n = 442630097 and 442630106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243507 + ... + 245317.

It is an arithmetic number, because the mean of its divisors is an integer number (13254780).

Almost surely, 2^442630132 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 442630132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477172080).

442630132 is an abundant number, since it is smaller than the sum of its proper divisors (511714028).

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

442630132 is a wasteful number, since it uses less digits than its factorization.

442630132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 442630132 is about 21038.7768655880. The cubic root of 442630132 is about 762.1029774741.

Adding to 442630132 its reverse (231036244), we get a palindrome (673666376).

The spelling of 442630132 in words is "four hundred forty-two million, six hundred thirty thousand, one hundred thirty-two".