442444220240 has 40 divisors (see below), whose sum is σ = 1122199433568. Its totient is φ = 160888807040.

The previous prime is 442444220089. The next prime is 442444220261. The reversal of 442444220240 is 42022444244.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 442444220197 and 442444220206.

It is a congruent number.

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, 251387882 + ... + 251389641.

Almost surely, 2^442444220240 is an apocalyptic number.

442444220240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442444220240 is an abundant number, since it is smaller than the sum of its proper divisors (679755213328).

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

442444220240 is a wasteful number, since it uses less digits than its factorization.

442444220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502777547 (or 502777541 counting only the distinct ones).

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

Adding to 442444220240 its reverse (42022444244), we get a palindrome (484466664484).

The spelling of 442444220240 in words is "four hundred forty-two billion, four hundred forty-four million, two hundred twenty thousand, two hundred forty".