12240194 has 4 divisors (see below), whose sum is σ = 18360294. Its totient is φ = 6120096.

The previous prime is 12240167. The next prime is 12240197. The reversal of 12240194 is 49104221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49104221 = 29 ⋅1693249.

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 2845969 = 3065^2 + 1687^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12240197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060047 + ... + 3060050.

Almost surely, 2^12240194 is an apocalyptic number.

12240194 is a deficient number, since it is larger than the sum of its proper divisors (6120100).

12240194 is an equidigital number, since it uses as much as digits as its factorization.

12240194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120099.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12240194 is about 3498.5988624019. The cubic root of 12240194 is about 230.4602880628.

The spelling of 12240194 in words is "twelve million, two hundred forty thousand, one hundred ninety-four".