12449242 has 16 divisors (see below), whose sum is σ = 20655432. Its totient is φ = 5590080.

The previous prime is 12449147. The next prime is 12449243. The reversal of 12449242 is 24294421.

It can be written as a sum of positive squares in 4 ways, for example, as 11826721 + 622521 = 3439^2 + 789^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12449242.

It is not an unprimeable number, because it can be changed into a prime (12449243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5509 + ... + 7432.

Almost surely, 2^12449242 is an apocalyptic number.

12449242 is a deficient number, since it is larger than the sum of its proper divisors (8206190).

12449242 is a wasteful number, since it uses less digits than its factorization.

12449242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12993.

The product of its digits is 4608, while the sum is 28.

The square root of 12449242 is about 3528.3483388124. The cubic root of 12449242 is about 231.7648851741.

The spelling of 12449242 in words is "twelve million, four hundred forty-nine thousand, two hundred forty-two".