12643126 has 4 divisors (see below), whose sum is σ = 18964692. Its totient is φ = 6321562.

The previous prime is 12643117. The next prime is 12643177. The reversal of 12643126 is 62134621.

12643126 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, and also an emirpimes, since its reverse is a distinct semiprime: 62134621 = 1571 ⋅39551.

It is a self number, because there is not a number n which added to its sum of digits gives 12643126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3160780 + ... + 3160783.

It is an arithmetic number, because the mean of its divisors is an integer number (4741173).

Almost surely, 2^12643126 is an apocalyptic number.

12643126 is a deficient number, since it is larger than the sum of its proper divisors (6321566).

12643126 is an equidigital number, since it uses as much as digits as its factorization.

12643126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6321565.

The product of its digits is 1728, while the sum is 25.

The square root of 12643126 is about 3555.7173678458. The cubic root of 12643126 is about 232.9618583455.

Adding to 12643126 its reverse (62134621), we get a palindrome (74777747).

It can be divided in two parts, 12643 and 126, that added together give a square (12769 = 113²).

The spelling of 12643126 in words is "twelve million, six hundred forty-three thousand, one hundred twenty-six".