12440420132 has 12 divisors (see below), whose sum is σ = 24880840320. Its totient is φ = 5331608616.

The previous prime is 12440420129. The next prime is 12440420137. The reversal of 12440420132 is 23102404421.

12440420132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

12440420132 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12440420098 and 12440420107.

It is not an unprimeable number, because it can be changed into a prime (12440420137) 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, 222150332 + ... + 222150387.

It is an arithmetic number, because the mean of its divisors is an integer number (2073403360).

Almost surely, 2^12440420132 is an apocalyptic number.

It is an amenable number.

12440420132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12440420132 is a wasteful number, since it uses less digits than its factorization.

12440420132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444300730 (or 444300728 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12440420132 its reverse (23102404421), we get a palindrome (35542824553).

The spelling of 12440420132 in words is "twelve billion, four hundred forty million, four hundred twenty thousand, one hundred thirty-two".