12126743 has 2 divisors, whose sum is σ = 12126744. Its totient is φ = 12126742.

The previous prime is 12126733. The next prime is 12126749. The reversal of 12126743 is 34762121.

It is a strong prime.

It is an emirp because it is prime and its reverse (34762121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12126743 - 2⁶ = 12126679 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12126749) 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, 6063371 + 6063372.

It is an arithmetic number, because the mean of its divisors is an integer number (6063372).

Almost surely, 2^12126743 is an apocalyptic number.

12126743 is a deficient number, since it is larger than the sum of its proper divisors (1).

12126743 is an equidigital number, since it uses as much as digits as its factorization.

12126743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 12126743 is about 3482.3473405162. The cubic root of 12126743 is about 229.7460524178.

Adding to 12126743 its reverse (34762121), we get a palindrome (46888864).

The spelling of 12126743 in words is "twelve million, one hundred twenty-six thousand, seven hundred forty-three".