842121186 has 16 divisors (see below), whose sum is σ = 1697100768. Its totient is φ = 278564000.

The previous prime is 842121167. The next prime is 842121199. The reversal of 842121186 is 681121248.

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 7 ways as a sum of consecutive naturals, for example, 534915 + ... + 536486.

It is an arithmetic number, because the mean of its divisors is an integer number (106068798).

Almost surely, 2^842121186 is an apocalyptic number.

842121186 is an abundant number, since it is smaller than the sum of its proper divisors (854979582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842121186 is a wasteful number, since it uses less digits than its factorization.

842121186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071537.

The product of its digits is 6144, while the sum is 33.

The square root of 842121186 is about 29019.3243546434. The cubic root of 842121186 is about 944.3323432724.

The spelling of 842121186 in words is "eight hundred forty-two million, one hundred twenty-one thousand, one hundred eighty-six".