843671922242 has 18 divisors (see below), whose sum is σ = 1269826705899. Its totient is φ = 420401239920.

The previous prime is 843671922217. The next prime is 843671922263. The reversal of 843671922242 is 242229176348.

It can be written as a sum of positive squares in 5 ways, for example, as 62779812481 + 780892109761 = 250559^2 + 883681^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=649489.

It is a super-2 number, since 2×843671922242² (a number of 25 digits) contains 22 as substring.

It is a Duffinian 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 in 8 ways as a sum of consecutive naturals, for example, 453342392 + ... + 453344252.

Almost surely, 2^843671922242 is an apocalyptic number.

843671922242 is a deficient number, since it is larger than the sum of its proper divisors (426154783657).

843671922242 is an frugal number, since it uses more digits than its factorization.

843671922242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422 (or 2212 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 50.

Multiplying 843671922242 by its sum of digits (50), we get a square (42183596112100 = 6494890²).

The spelling of 843671922242 in words is "eight hundred forty-three billion, six hundred seventy-one million, nine hundred twenty-two thousand, two hundred forty-two".