842427236645 has 8 divisors (see below), whose sum is σ = 1013912426904. Its totient is φ = 671941960704.

The previous prime is 842427236597. The next prime is 842427236659. The reversal of 842427236645 is 546632724248.

It can be written as a sum of positive squares in 4 ways, for example, as 57547396 + 842369689249 = 7586^2 + 917807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 842427236645 - 2²⁰ = 842426188069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249976724 + ... + 249980093.

It is an arithmetic number, because the mean of its divisors is an integer number (126739053363).

Almost surely, 2^842427236645 is an apocalyptic number.

It is an amenable number.

842427236645 is a deficient number, since it is larger than the sum of its proper divisors (171485190259).

842427236645 is a wasteful number, since it uses less digits than its factorization.

842427236645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499957159.

The product of its digits is 15482880, while the sum is 53.

The spelling of 842427236645 in words is "eight hundred forty-two billion, four hundred twenty-seven million, two hundred thirty-six thousand, six hundred forty-five".