442404242420 has 48 divisors (see below), whose sum is σ = 1068801823488. Its totient is φ = 150676934400.

The previous prime is 442404242419. The next prime is 442404242437. The reversal of 442404242420 is 24242404244.

It is a super-2 number, since 2×442404242420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10442537 + ... + 10484816.

It is an arithmetic number, because the mean of its divisors is an integer number (22266704656).

Almost surely, 2^442404242420 is an apocalyptic number.

It is an amenable number.

442404242420 is an abundant number, since it is smaller than the sum of its proper divisors (626397581068).

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

442404242420 is a wasteful number, since it uses less digits than its factorization.

442404242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20927520 (or 20927518 counting only the distinct ones).

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

Adding to 442404242420 its reverse (24242404244), we get a palindrome (466646646664).

The spelling of 442404242420 in words is "four hundred forty-two billion, four hundred four million, two hundred forty-two thousand, four hundred twenty".