12403443230240 has 96 divisors (see below), whose sum is σ = 29826987644160. Its totient is φ = 4872836061184.

The previous prime is 12403443230231. The next prime is 12403443230249. The reversal of 12403443230240 is 4203234430421.

It is an interprime number because it is at equal distance from previous prime (12403443230231) and next prime (12403443230249).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 12403443230197 and 12403443230206.

It is not an unprimeable number, because it can be changed into a prime (12403443230249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9756809 + ... + 10954551.

It is an arithmetic number, because the mean of its divisors is an integer number (310697787960).

Almost surely, 2^{12403443230240} is an apocalyptic number.

12403443230240 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 12403443230240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14913493822080).

12403443230240 is an abundant number, since it is smaller than the sum of its proper divisors (17423544413920).

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

12403443230240 is a wasteful number, since it uses less digits than its factorization.

12403443230240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198914 (or 1198906 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 12403443230240 its reverse (4203234430421), we get a palindrome (16606677660661).

The spelling of 12403443230240 in words is "twelve trillion, four hundred three billion, four hundred forty-three million, two hundred thirty thousand, two hundred forty".