12186242 has 4 divisors (see below), whose sum is σ = 18279366. Its totient is φ = 6093120.

The previous prime is 12186217. The next prime is 12186299. The reversal of 12186242 is 24268121.

It is a happy number.

12186242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 7946761 + 4239481 = 2819^2 + 2059^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3046559 + ... + 3046562.

Almost surely, 2^12186242 is an apocalyptic number.

12186242 is a deficient number, since it is larger than the sum of its proper divisors (6093124).

12186242 is an equidigital number, since it uses as much as digits as its factorization.

12186242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093123.

The product of its digits is 1536, while the sum is 26.

The square root of 12186242 is about 3490.8798317903. The cubic root of 12186242 is about 230.1211837758.

The spelling of 12186242 in words is "twelve million, one hundred eighty-six thousand, two hundred forty-two".