442332424 has 16 divisors (see below), whose sum is σ = 833544000. Its totient is φ = 220054032.

The previous prime is 442332421. The next prime is 442332467. The reversal of 442332424 is 424233244.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 442332392 and 442332401.

It is not an unprimeable number, because it can be changed into a prime (442332421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137332 + ... + 140515.

It is an arithmetic number, because the mean of its divisors is an integer number (52096500).

Almost surely, 2^442332424 is an apocalyptic number.

It is an amenable number.

442332424 is a deficient number, since it is larger than the sum of its proper divisors (391211576).

442332424 is a wasteful number, since it uses less digits than its factorization.

442332424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278052 (or 278048 counting only the distinct ones).

The product of its digits is 18432, while the sum is 28.

The square root of 442332424 is about 21031.7004543142. The cubic root of 442332424 is about 761.9320785509.

Adding to 442332424 its reverse (424233244), we get a palindrome (866565668).

The spelling of 442332424 in words is "four hundred forty-two million, three hundred thirty-two thousand, four hundred twenty-four".