442242440420 has 48 divisors (see below), whose sum is σ = 1017376416000. Its totient is φ = 160142545920.

The previous prime is 442242440407. The next prime is 442242440429. The reversal of 442242440420 is 24044242244.

It is a super-2 number, since 2×442242440420² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442242440429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4152845 + ... + 4258004.

It is an arithmetic number, because the mean of its divisors is an integer number (21195342000).

Almost surely, 2^442242440420 is an apocalyptic number.

It is an amenable number.

442242440420 is an abundant number, since it is smaller than the sum of its proper divisors (575133975580).

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

442242440420 is a wasteful number, since it uses less digits than its factorization.

442242440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411108 (or 8411106 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 442242440420 its reverse (24044242244), we get a palindrome (466286682664).

The spelling of 442242440420 in words is "four hundred forty-two billion, two hundred forty-two million, four hundred forty thousand, four hundred twenty".