12340421152 has 24 divisors (see below), whose sum is σ = 24951833676. Its totient is φ = 6003447552.

The previous prime is 12340421141. The next prime is 12340421153. The reversal of 12340421152 is 25112404321.

12340421152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11126874256 + 1213546896 = 105484^2 + 34836^2 .

It is not an unprimeable number, because it can be changed into a prime (12340421153) 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 3 ways as a sum of consecutive naturals, for example, 5210143 + ... + 5212510.

Almost surely, 2^12340421152 is an apocalyptic number.

It is an amenable number.

12340421152 is an abundant number, since it is smaller than the sum of its proper divisors (12611412524).

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

12340421152 is a wasteful number, since it uses less digits than its factorization.

12340421152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10422700 (or 10422692 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12340421152 its reverse (25112404321), we get a palindrome (37452825473).

The spelling of 12340421152 in words is "twelve billion, three hundred forty million, four hundred twenty-one thousand, one hundred fifty-two".