442421324 has 36 divisors (see below), whose sum is σ = 812551320. Its totient is φ = 210651840.

The previous prime is 442421279. The next prime is 442421347. The reversal of 442421324 is 423124244.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 442421293 and 442421302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 302507 + ... + 303965.

It is an arithmetic number, because the mean of its divisors is an integer number (22570870).

Almost surely, 2^442421324 is an apocalyptic number.

It is an amenable number.

442421324 is a deficient number, since it is larger than the sum of its proper divisors (370129996).

442421324 is a wasteful number, since it uses less digits than its factorization.

442421324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590 (or 1545 counting only the distinct ones).

The product of its digits is 6144, while the sum is 26.

The square root of 442421324 is about 21033.8138244114. The cubic root of 442421324 is about 761.9831195182.

Adding to 442421324 its reverse (423124244), we get a palindrome (865545568).

The spelling of 442421324 in words is "four hundred forty-two million, four hundred twenty-one thousand, three hundred twenty-four".