12420043412 has 24 divisors (see below), whose sum is σ = 24855352704. Its totient is φ = 5319604512.

The previous prime is 12420043403. The next prime is 12420043423. The reversal of 12420043412 is 21434002421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89648 + ... + 181319.

It is an arithmetic number, because the mean of its divisors is an integer number (1035639696).

Almost surely, 2^12420043412 is an apocalyptic number.

It is an amenable number.

12420043412 is an abundant number, since it is smaller than the sum of its proper divisors (12435309292).

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

12420043412 is a wasteful number, since it uses less digits than its factorization.

12420043412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272615 (or 272613 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12420043412 its reverse (21434002421), we get a palindrome (33854045833).

The spelling of 12420043412 in words is "twelve billion, four hundred twenty million, forty-three thousand, four hundred twelve".