12420343152 has 120 divisors (see below), whose sum is σ = 40318518656. Its totient is φ = 3495685248.

The previous prime is 12420343129. The next prime is 12420343153. The reversal of 12420343152 is 25134302421.

12420343152 is a `hidden beast` number, since 1 + 24 + 203 + 431 + 5 + 2 = 666.

12420343152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420343153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24418 + ... + 159489.

Almost surely, 2^12420343152 is an apocalyptic number.

12420343152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12420343152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20159259328).

12420343152 is an abundant number, since it is smaller than the sum of its proper divisors (27898175504).

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

12420343152 is a wasteful number, since it uses less digits than its factorization.

12420343152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183995 (or 183986 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 12420343152 its reverse (25134302421), we get a palindrome (37554645573).

The spelling of 12420343152 in words is "twelve billion, four hundred twenty million, three hundred forty-three thousand, one hundred fifty-two".