442540424 has 32 divisors (see below), whose sum is σ = 889254720. Its totient is φ = 205926336.

The previous prime is 442540409. The next prime is 442540433. The reversal of 442540424 is 424045244.

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, 25694 + ... + 39309.

It is an arithmetic number, because the mean of its divisors is an integer number (27789210).

Almost surely, 2^442540424 is an apocalyptic number.

It is an amenable number.

442540424 is an abundant number, since it is smaller than the sum of its proper divisors (446714296).

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

442540424 is a wasteful number, since it uses less digits than its factorization.

442540424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65069 (or 65065 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 29.

The square root of 442540424 is about 21036.6447895096. The cubic root of 442540424 is about 762.0514887719.

Adding to 442540424 its reverse (424045244), we get a palindrome (866585668).

The spelling of 442540424 in words is "four hundred forty-two million, five hundred forty thousand, four hundred twenty-four".