12249137 has 4 divisors (see below), whose sum is σ = 12277860. Its totient is φ = 12220416.

The previous prime is 12249121. The next prime is 12249143. The reversal of 12249137 is 73194221.

12249137 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 2 ways, for example, as 6754801 + 5494336 = 2599^2 + 2344^2 .

It is a cyclic number.

It is not a de Polignac number, because 12249137 - 2⁴ = 12249121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12249157) 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, 13712 + ... + 14577.

It is an arithmetic number, because the mean of its divisors is an integer number (3069465).

Almost surely, 2^12249137 is an apocalyptic number.

It is an amenable number.

12249137 is a deficient number, since it is larger than the sum of its proper divisors (28723).

12249137 is an equidigital number, since it uses as much as digits as its factorization.

12249137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28722.

The product of its digits is 3024, while the sum is 29.

The square root of 12249137 is about 3499.8767121143. The cubic root of 12249137 is about 230.5164011336.

The spelling of 12249137 in words is "twelve million, two hundred forty-nine thousand, one hundred thirty-seven".