12343043420 has 24 divisors (see below), whose sum is σ = 25924146864. Its totient is φ = 4936502016.

The previous prime is 12343043413. The next prime is 12343043429. The reversal of 12343043420 is 2434034321.

It is a self number, because there is not a number n which added to its sum of digits gives 12343043420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12343043429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109799 + ... + 191681.

It is an arithmetic number, because the mean of its divisors is an integer number (1080172786).

Almost surely, 2^12343043420 is an apocalyptic number.

12343043420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12343043420 is an abundant number, since it is smaller than the sum of its proper divisors (13581103444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12343043420 is a wasteful number, since it uses less digits than its factorization.

12343043420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89429 (or 89427 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 12343043420 its reverse (2434034321), we get a palindrome (14777077741).

Subtracting from 12343043420 its reverse (2434034321), we obtain a palindrome (9909009099).

The spelling of 12343043420 in words is "twelve billion, three hundred forty-three million, forty-three thousand, four hundred twenty".