442312232 has 16 divisors (see below), whose sum is σ = 831369300. Its totient is φ = 220613760.

The previous prime is 442312219. The next prime is 442312237. The reversal of 442312232 is 232213244.

It can be written as a sum of positive squares in 2 ways, for example, as 324936676 + 117375556 = 18026^2 + 10834^2 .

It is a super-2 number, since 2×442312232² = 391280221153643648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442312198 and 442312207.

It is not an unprimeable number, because it can be changed into a prime (442312237) 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, 64319 + ... + 70862.

Almost surely, 2^442312232 is an apocalyptic number.

It is an amenable number.

442312232 is a deficient number, since it is larger than the sum of its proper divisors (389057068).

442312232 is a wasteful number, since it uses less digits than its factorization.

442312232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135596 (or 135592 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 442312232 is about 21031.2204115691. The cubic root of 442312232 is about 761.9204845808.

Adding to 442312232 its reverse (232213244), we get a palindrome (674525476).

The spelling of 442312232 in words is "four hundred forty-two million, three hundred twelve thousand, two hundred thirty-two".