842972168 has 16 divisors (see below), whose sum is σ = 1580917500. Its totient is φ = 421394176.

The previous prime is 842972161. The next prime is 842972171. The reversal of 842972168 is 861279248.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 778298404 + 64673764 = 27898^2 + 8042^2 .

It is not an unprimeable number, because it can be changed into a prime (842972161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42308 + ... + 58956.

Almost surely, 2^842972168 is an apocalyptic number.

It is an amenable number.

842972168 is a deficient number, since it is larger than the sum of its proper divisors (737945332).

842972168 is a wasteful number, since it uses less digits than its factorization.

842972168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22984 (or 22980 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 842972168 is about 29033.9829854603. The cubic root of 842972168 is about 944.6503257286.

The spelling of 842972168 in words is "eight hundred forty-two million, nine hundred seventy-two thousand, one hundred sixty-eight".