442020400244 has 6 divisors (see below), whose sum is σ = 773535700434. Its totient is φ = 221010200120.

The previous prime is 442020400207. The next prime is 442020400303. The reversal of 442020400244 is 442004020244.

It can be written as a sum of positive squares in only one way, i.e., 317883971344 + 124136428900 = 563812^2 + 352330^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55252550027 + ... + 55252550034.

It is an arithmetic number, because the mean of its divisors is an integer number (128922616739).

Almost surely, 2^442020400244 is an apocalyptic number.

It is an amenable number.

442020400244 is a deficient number, since it is larger than the sum of its proper divisors (331515300190).

442020400244 is a wasteful number, since it uses less digits than its factorization.

442020400244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110505100065 (or 110505100063 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 442020400244 its reverse (442004020244), we get a palindrome (884024420488).

The spelling of 442020400244 in words is "four hundred forty-two billion, twenty million, four hundred thousand, two hundred forty-four".