859389342242 has 6 divisors (see below), whose sum is σ = 1289085979899. Its totient is φ = 429694015610.

The previous prime is 859389342179. The next prime is 859389342293. The reversal of 859389342242 is 242243983958.

It can be written as a sum of positive squares in only one way, i.e., 429694671121 + 429694671121 = 655511^2 + 655511^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=655511.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 983267 + ... + 1638777.

Almost surely, 2^859389342242 is an apocalyptic number.

859389342242 is a deficient number, since it is larger than the sum of its proper divisors (429696637657).

859389342242 is an frugal number, since it uses more digits than its factorization.

859389342242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311024 (or 655513 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 59.

The spelling of 859389342242 in words is "eight hundred fifty-nine billion, three hundred eighty-nine million, three hundred forty-two thousand, two hundred forty-two".