827142185 has 4 divisors (see below), whose sum is σ = 992570628. Its totient is φ = 661713744.

The previous prime is 827142163. The next prime is 827142193. The reversal of 827142185 is 581241728.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 368025856 + 459116329 = 19184^2 + 21427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-827142185 is a prime.

It is a Duffinian number.

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, 82714214 + ... + 82714223.

It is an arithmetic number, because the mean of its divisors is an integer number (248142657).

Almost surely, 2^827142185 is an apocalyptic number.

It is an amenable number.

827142185 is a deficient number, since it is larger than the sum of its proper divisors (165428443).

827142185 is a wasteful number, since it uses less digits than its factorization.

827142185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165428442.

The product of its digits is 35840, while the sum is 38.

The square root of 827142185 is about 28760.0797112943. The cubic root of 827142185 is about 938.6997962517.

The spelling of 827142185 in words is "eight hundred twenty-seven million, one hundred forty-two thousand, one hundred eighty-five".