842156739898 has 32 divisors (see below), whose sum is σ = 1340326310400. Its totient is φ = 395739264816.

The previous prime is 842156739889. The next prime is 842156739899. The reversal of 842156739898 is 898937651248.

It is not an unprimeable number, because it can be changed into a prime (842156739899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6821265 + ... + 6943627.

It is an arithmetic number, because the mean of its divisors is an integer number (41885197200).

Almost surely, 2^842156739898 is an apocalyptic number.

842156739898 is a deficient number, since it is larger than the sum of its proper divisors (498169570502).

842156739898 is a wasteful number, since it uses less digits than its factorization.

842156739898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123826.

The product of its digits is 209018880, while the sum is 70.

The spelling of 842156739898 in words is "eight hundred forty-two billion, one hundred fifty-six million, seven hundred thirty-nine thousand, eight hundred ninety-eight".