12140185 has 4 divisors (see below), whose sum is σ = 14568228. Its totient is φ = 9712144.

The previous prime is 12140153. The next prime is 12140201. The reversal of 12140185 is 58104121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58104121 = 163 ⋅356467.

It can be written as a sum of positive squares in 2 ways, for example, as 5895184 + 6245001 = 2428^2 + 2499^2 .

It is a cyclic number.

It is not a de Polignac number, because 12140185 - 2⁵ = 12140153 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, 1214014 + ... + 1214023.

It is an arithmetic number, because the mean of its divisors is an integer number (3642057).

Almost surely, 2^12140185 is an apocalyptic number.

It is an amenable number.

12140185 is a deficient number, since it is larger than the sum of its proper divisors (2428043).

12140185 is an equidigital number, since it uses as much as digits as its factorization.

12140185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428042.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 12140185 is about 3484.2768259712. The cubic root of 12140185 is about 229.8309091150.

The spelling of 12140185 in words is "twelve million, one hundred forty thousand, one hundred eighty-five".