2142185 has 8 divisors (see below), whose sum is σ = 2606280. Its totient is φ = 1689984.

The previous prime is 2142181. The next prime is 2142211. The reversal of 2142185 is 5812412.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 2111209 = 176^2 + 1453^2 .

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 2142185 - 2² = 2142181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2142185.

It is not an unprimeable number, because it can be changed into a prime (2142181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2570 + ... + 3299.

It is an arithmetic number, because the mean of its divisors is an integer number (325785).

2^2142185 is an apocalyptic number.

It is an amenable number.

2142185 is a deficient number, since it is larger than the sum of its proper divisors (464095).

2142185 is an equidigital number, since it uses as much as digits as its factorization.

2142185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5947.

The product of its digits is 640, while the sum is 23.

The square root of 2142185 is about 1463.6205109249. The cubic root of 2142185 is about 128.9097178926.

Adding to 2142185 its reverse (5812412), we get a palindrome (7954597).

The spelling of 2142185 in words is "two million, one hundred forty-two thousand, one hundred eighty-five".