12128007340 has 24 divisors (see below), whose sum is σ = 25560772272. Its totient is φ = 4833687360.

The previous prime is 12128007319. The next prime is 12128007343. The reversal of 12128007340 is 4370082121.

12128007340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12128007299 and 12128007308.

It is not an unprimeable number, because it can be changed into a prime (12128007343) 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 7 ways as a sum of consecutive naturals, for example, 1089046 + ... + 1100125.

It is an arithmetic number, because the mean of its divisors is an integer number (1065032178).

Almost surely, 2^12128007340 is an apocalyptic number.

12128007340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12128007340 is an abundant number, since it is smaller than the sum of its proper divisors (13432764932).

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

12128007340 is a wasteful number, since it uses less digits than its factorization.

12128007340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189457 (or 2189455 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 12128007340 its reverse (4370082121), we get a palindrome (16498089461).

The spelling of 12128007340 in words is "twelve billion, one hundred twenty-eight million, seven thousand, three hundred forty".