442405132 has 12 divisors (see below), whose sum is σ = 833763616. Its totient is φ = 204186960.

The previous prime is 442405111. The next prime is 442405133. The reversal of 442405132 is 231504244.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 442405097 and 442405106.

It is not an unprimeable number, because it can be changed into a prime (442405133) 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, 4253844 + ... + 4253947.

Almost surely, 2^442405132 is an apocalyptic number.

It is an amenable number.

442405132 is a deficient number, since it is larger than the sum of its proper divisors (391358484).

442405132 is a wasteful number, since it uses less digits than its factorization.

442405132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8507808 (or 8507806 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 442405132 is about 21033.4289168457. The cubic root of 442405132 is about 761.9738235670.

Adding to 442405132 its reverse (231504244), we get a palindrome (673909376).

The spelling of 442405132 in words is "four hundred forty-two million, four hundred five thousand, one hundred thirty-two".