12012407040 has 144 divisors (see below), whose sum is σ = 38447640000. Its totient is φ = 3196379136.

The previous prime is 12012407003. The next prime is 12012407047. The reversal of 12012407040 is 4070421021.

It is a happy number.

12012407040 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 = 12012406998 and 12012407016.

It is not an unprimeable number, because it can be changed into a prime (12012407047) 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 15 ways as a sum of consecutive naturals, for example, 1913026 + ... + 1919294.

It is an arithmetic number, because the mean of its divisors is an integer number (266997500).

Almost surely, 2^12012407040 is an apocalyptic number.

12012407040 is a gapful number since it is divisible by the number (10) 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 12012407040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19223820000).

12012407040 is an abundant number, since it is smaller than the sum of its proper divisors (26435232960).

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

12012407040 is an equidigital number, since it uses as much as digits as its factorization.

12012407040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792 (or 6778 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

Adding to 12012407040 its reverse (4070421021), we get a palindrome (16082828061).

The spelling of 12012407040 in words is "twelve billion, twelve million, four hundred seven thousand, forty".