12240410042420 has 144 divisors (see below), whose sum is σ = 30192682141440. Its totient is φ = 4156048915200.

The previous prime is 12240410042417. The next prime is 12240410042429. The reversal of 12240410042420 is 2424001404221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12240410042420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240410042429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42249455 + ... + 42538185.

It is an arithmetic number, because the mean of its divisors is an integer number (209671403760).

Almost surely, 2^{12240410042420} is an apocalyptic number.

12240410042420 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 12240410042420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15096341070720).

12240410042420 is an abundant number, since it is smaller than the sum of its proper divisors (17952272099020).

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

12240410042420 is a wasteful number, since it uses less digits than its factorization.

12240410042420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289174 (or 289165 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 12240410042420 its reverse (2424001404221), we get a palindrome (14664411446641).

The spelling of 12240410042420 in words is "twelve trillion, two hundred forty billion, four hundred ten million, forty-two thousand, four hundred twenty".