8142185 has 16 divisors (see below), whose sum is σ = 10193040. Its totient is φ = 6236160.

The previous prime is 8142157. The next prime is 8142221. The reversal of 8142185 is 5812418.

It can be written as a sum of positive squares in 8 ways, for example, as 59536 + 8082649 = 244^2 + 2843^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8142185 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33665 + ... + 33905.

It is an arithmetic number, because the mean of its divisors is an integer number (637065).

Almost surely, 2^8142185 is an apocalyptic number.

8142185 is the 2330-th pentagonal number.

It is an amenable number.

8142185 is a deficient number, since it is larger than the sum of its proper divisors (2050855).

8142185 is a wasteful number, since it uses less digits than its factorization.

8142185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508.

The product of its digits is 2560, while the sum is 29.

The square root of 8142185 is about 2853.4514188961. The cubic root of 8142185 is about 201.1779238571.

The spelling of 8142185 in words is "eight million, one hundred forty-two thousand, one hundred eighty-five".