12126845 has 16 divisors (see below), whose sum is σ = 15474240. Its totient is φ = 9097344.

The previous prime is 12126841. The next prime is 12126853. The reversal of 12126845 is 54862121.

It is a cyclic number.

It is not a de Polignac number, because 12126845 - 2² = 12126841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9569 + ... + 10761.

It is an arithmetic number, because the mean of its divisors is an integer number (967140).

Almost surely, 2^12126845 is an apocalyptic number.

It is an amenable number.

12126845 is a deficient number, since it is larger than the sum of its proper divisors (3347395).

12126845 is a wasteful number, since it uses less digits than its factorization.

12126845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its digits is 3840, while the sum is 29.

The square root of 12126845 is about 3482.3619857792. The cubic root of 12126845 is about 229.7466965598.

Adding to 12126845 its reverse (54862121), we get a palindrome (66988966).

The spelling of 12126845 in words is "twelve million, one hundred twenty-six thousand, eight hundred forty-five".