422444097842 has 18 divisors (see below), whose sum is σ = 686178609687. Its totient is φ = 194968683936.

The previous prime is 422444097839. The next prime is 422444097851. The reversal of 422444097842 is 248790444224.

It can be written as a sum of positive squares in 5 ways, for example, as 351410654401 + 71033443441 = 592799^2 + 266521^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=459589.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 11931638 + ... + 11966990.

Almost surely, 2^422444097842 is an apocalyptic number.

422444097842 is a deficient number, since it is larger than the sum of its proper divisors (263734511845).

422444097842 is an frugal number, since it uses more digits than its factorization.

422444097842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70734 (or 35368 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 50.

Multiplying 422444097842 by its sum of digits (50), we get a square (21122204892100 = 4595890²).

The spelling of 422444097842 in words is "four hundred twenty-two billion, four hundred forty-four million, ninety-seven thousand, eight hundred forty-two".