842171212 has 12 divisors (see below), whose sum is σ = 1479280320. Its totient is φ = 419519696.

The previous prime is 842171207. The next prime is 842171233. The reversal of 842171212 is 212171248.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390268 + ... + 392419.

It is an arithmetic number, because the mean of its divisors is an integer number (123273360).

Almost surely, 2^842171212 is an apocalyptic number.

It is an amenable number.

842171212 is a deficient number, since it is larger than the sum of its proper divisors (637109108).

842171212 is a wasteful number, since it uses less digits than its factorization.

842171212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782960 (or 782958 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 842171212 is about 29020.1862847226. The cubic root of 842171212 is about 944.3510421782.

The spelling of 842171212 in words is "eight hundred forty-two million, one hundred seventy-one thousand, two hundred twelve".