842688319252 has 18 divisors (see below), whose sum is σ = 1588155846494. Its totient is φ = 388930015200.

The previous prime is 842688319243. The next prime is 842688319259. The reversal of 842688319252 is 252913886248.

It can be written as a sum of positive squares in 3 ways, for example, as 17781155716 + 824907163536 = 133346^2 + 908244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842688319259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6556002 + ... + 6683302.

Almost surely, 2^842688319252 is an apocalyptic number.

It is an amenable number.

842688319252 is a deficient number, since it is larger than the sum of its proper divisors (745467527242).

842688319252 is an frugal number, since it uses more digits than its factorization.

842688319252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254619 (or 127316 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 58.

The spelling of 842688319252 in words is "eight hundred forty-two billion, six hundred eighty-eight million, three hundred nineteen thousand, two hundred fifty-two".