442042202440 has 16 divisors (see below), whose sum is σ = 994594955580. Its totient is φ = 176816880960.

The previous prime is 442042202339. The next prime is 442042202479. The reversal of 442042202440 is 44202240244.

It can be written as a sum of positive squares in 2 ways, for example, as 405970316964 + 36071885476 = 637158^2 + 189926^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442042202399 and 442042202408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5525527491 + ... + 5525527570.

Almost surely, 2^442042202440 is an apocalyptic number.

442042202440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442042202440 is an abundant number, since it is smaller than the sum of its proper divisors (552552753140).

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

442042202440 is a wasteful number, since it uses less digits than its factorization.

442042202440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11051055072 (or 11051055068 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 442042202440 its reverse (44202240244), we get a palindrome (486244442684).

The spelling of 442042202440 in words is "four hundred forty-two billion, forty-two million, two hundred two thousand, four hundred forty".