842186771252 has 6 divisors (see below), whose sum is σ = 1473826849698. Its totient is φ = 421093385624.

The previous prime is 842186771249. The next prime is 842186771357. The reversal of 842186771252 is 252177681248.

It can be written as a sum of positive squares in only one way, i.e., 552994500496 + 289192270756 = 743636^2 + 537766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 842186771194 and 842186771203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105273346403 + ... + 105273346410.

It is an arithmetic number, because the mean of its divisors is an integer number (245637808283).

Almost surely, 2^842186771252 is an apocalyptic number.

It is an amenable number.

842186771252 is a deficient number, since it is larger than the sum of its proper divisors (631640078446).

842186771252 is a wasteful number, since it uses less digits than its factorization.

842186771252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210546692817 (or 210546692815 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 53.

The spelling of 842186771252 in words is "eight hundred forty-two billion, one hundred eighty-six million, seven hundred seventy-one thousand, two hundred fifty-two".