12020304426 has 48 divisors (see below), whose sum is σ = 26452834464. Its totient is φ = 3619810656.

The previous prime is 12020304403. The next prime is 12020304451. The reversal of 12020304426 is 62440302021.

12020304426 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 = 12020304396 and 12020304405.

It is an unprimeable number.

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, 137421 + ... + 207183.

It is an arithmetic number, because the mean of its divisors is an integer number (551100718).

Almost surely, 2^12020304426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020304426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13226417232).

12020304426 is an abundant number, since it is smaller than the sum of its proper divisors (14432530038).

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

12020304426 is a wasteful number, since it uses less digits than its factorization.

12020304426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69875 (or 69828 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12020304426 its reverse (62440302021), we get a palindrome (74460606447).

The spelling of 12020304426 in words is "twelve billion, twenty million, three hundred four thousand, four hundred twenty-six".