12506423 has 4 divisors (see below), whose sum is σ = 12909888. Its totient is φ = 12102960.

The previous prime is 12506401. The next prime is 12506447. The reversal of 12506423 is 32460521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12506423 - 2⁸ = 12506167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506023) 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, 201686 + ... + 201747.

It is an arithmetic number, because the mean of its divisors is an integer number (3227472).

Almost surely, 2^12506423 is an apocalyptic number.

12506423 is a deficient number, since it is larger than the sum of its proper divisors (403465).

12506423 is an equidigital number, since it uses as much as digits as its factorization.

12506423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403464.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 12506423 is about 3536.4421386473. The cubic root of 12506423 is about 232.1191854409.

Adding to 12506423 its reverse (32460521), we get a palindrome (44966944).

The spelling of 12506423 in words is "twelve million, five hundred six thousand, four hundred twenty-three".