12641423 has 4 divisors (see below), whose sum is σ = 12753408. Its totient is φ = 12529440.

The previous prime is 12641411. The next prime is 12641429. The reversal of 12641423 is 32414621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32414621 = 3137 ⋅10333.

It is not a de Polignac number, because 12641423 - 2¹⁰ = 12640399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641429) 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 in 3 ways as a sum of consecutive naturals, for example, 55823 + ... + 56048.

It is an arithmetic number, because the mean of its divisors is an integer number (3188352).

Almost surely, 2^12641423 is an apocalyptic number.

12641423 is a deficient number, since it is larger than the sum of its proper divisors (111985).

12641423 is a wasteful number, since it uses less digits than its factorization.

12641423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111984.

The product of its digits is 1152, while the sum is 23.

The square root of 12641423 is about 3555.4778863045. The cubic root of 12641423 is about 232.9513980670.

The spelling of 12641423 in words is "twelve million, six hundred forty-one thousand, four hundred twenty-three".