12423043249 has 4 divisors (see below), whose sum is σ = 12424226164. Its totient is φ = 12421860336.

The previous prime is 12423043219. The next prime is 12423043253. The reversal of 12423043249 is 94234032421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94234032421 = 2971 ⋅31717951.

It can be written as a sum of positive squares in 2 ways, for example, as 3174759025 + 9248284224 = 56345^2 + 96168^2 .

It is a cyclic number.

It is not a de Polignac number, because 12423043249 - 2⁷ = 12423043121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12423043219) 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, 575562 + ... + 596755.

It is an arithmetic number, because the mean of its divisors is an integer number (3106056541).

Almost surely, 2^12423043249 is an apocalyptic number.

It is an amenable number.

12423043249 is a deficient number, since it is larger than the sum of its proper divisors (1182915).

12423043249 is a wasteful number, since it uses less digits than its factorization.

12423043249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182914.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 12423043249 in words is "twelve billion, four hundred twenty-three million, forty-three thousand, two hundred forty-nine".