442324140 has 24 divisors (see below), whose sum is σ = 1238507760. Its totient is φ = 117953088.

The previous prime is 442324133. The next prime is 442324219. The reversal of 442324140 is 41423244.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 442324140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3685975 + ... + 3686094.

It is an arithmetic number, because the mean of its divisors is an integer number (51604490).

Almost surely, 2^442324140 is an apocalyptic number.

It is an amenable number.

442324140 is an abundant number, since it is smaller than the sum of its proper divisors (796183620).

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

442324140 is a wasteful number, since it uses less digits than its factorization.

442324140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7372081 (or 7372079 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 442324140 is about 21031.5035125880. The cubic root of 442324140 is about 761.9273220341.

Adding to 442324140 its reverse (41423244), we get a palindrome (483747384).

The spelling of 442324140 in words is "four hundred forty-two million, three hundred twenty-four thousand, one hundred forty".