12403234140 has 96 divisors (see below), whose sum is σ = 37915637760. Its totient is φ = 3004512000.

The previous prime is 12403234133. The next prime is 12403234157. The reversal of 12403234140 is 4143230421.

12403234140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12403234140.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 936565 + ... + 949715.

It is an arithmetic number, because the mean of its divisors is an integer number (394954560).

Almost surely, 2^12403234140 is an apocalyptic number.

12403234140 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 12403234140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18957818880).

12403234140 is an abundant number, since it is smaller than the sum of its proper divisors (25512403620).

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

12403234140 is a wasteful number, since it uses less digits than its factorization.

12403234140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14603 (or 14601 counting only the distinct ones).

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

Adding to 12403234140 its reverse (4143230421), we get a palindrome (16546464561).

The spelling of 12403234140 in words is "twelve billion, four hundred three million, two hundred thirty-four thousand, one hundred forty".