12126493 has 2 divisors, whose sum is σ = 12126494. Its totient is φ = 12126492.

The previous prime is 12126481. The next prime is 12126509. The reversal of 12126493 is 39462121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8508889 + 3617604 = 2917^2 + 1902^2 .

It is a cyclic number.

It is not a de Polignac number, because 12126493 - 2⁵ = 12126461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12126403) 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, 6063246 + 6063247.

It is an arithmetic number, because the mean of its divisors is an integer number (6063247).

Almost surely, 2^12126493 is an apocalyptic number.

It is an amenable number.

12126493 is a deficient number, since it is larger than the sum of its proper divisors (1).

12126493 is an equidigital number, since it uses as much as digits as its factorization.

12126493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 12126493 is about 3482.3114450032. The cubic root of 12126493 is about 229.7444736233.

The spelling of 12126493 in words is "twelve million, one hundred twenty-six thousand, four hundred ninety-three".