442042244540 has 48 divisors (see below), whose sum is σ = 999883204320. Its totient is φ = 163184958720.

The previous prime is 442042244521. The next prime is 442042244569. The reversal of 442042244540 is 45442240244.

It is a happy number.

It is a super-2 number, since 2×442042244540² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442042244540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1252070 + ... + 1565810.

It is an arithmetic number, because the mean of its divisors is an integer number (20830900090).

Almost surely, 2^442042244540 is an apocalyptic number.

It is an amenable number.

442042244540 is an abundant number, since it is smaller than the sum of its proper divisors (557840959780).

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

442042244540 is a wasteful number, since it uses less digits than its factorization.

442042244540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319182 (or 319180 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 35.

Adding to 442042244540 its reverse (45442240244), we get a palindrome (487484484784).

The spelling of 442042244540 in words is "four hundred forty-two billion, forty-two million, two hundred forty-four thousand, five hundred forty".