12242149 has 4 divisors (see below), whose sum is σ = 12540780. Its totient is φ = 11943520.

The previous prime is 12242123. The next prime is 12242161. The reversal of 12242149 is 94124221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94124221 = 47 ⋅2002643.

It can be written as a sum of positive squares in 2 ways, for example, as 4485924 + 7756225 = 2118^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 12242149 - 2¹⁹ = 11717861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12242189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149254 + ... + 149335.

It is an arithmetic number, because the mean of its divisors is an integer number (3135195).

Almost surely, 2^12242149 is an apocalyptic number.

It is an amenable number.

12242149 is a deficient number, since it is larger than the sum of its proper divisors (298631).

12242149 is an equidigital number, since it uses as much as digits as its factorization.

12242149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298630.

The product of its digits is 1152, while the sum is 25.

The square root of 12242149 is about 3498.8782488106. The cubic root of 12242149 is about 230.4725570916.

The spelling of 12242149 in words is "twelve million, two hundred forty-two thousand, one hundred forty-nine".