12420342004122 has 96 divisors (see below), whose sum is σ = 29464387439760. Its totient is φ = 3757909800960.

The previous prime is 12420342004099. The next prime is 12420342004157. The reversal of 12420342004122 is 22140024302421.

It is a happy number.

12420342004122 is a `hidden beast` number, since 1 + 2 + 4 + 203 + 42 + 0 + 0 + 412 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 8003699304561 + 4416642699561 = 2829081^2 + 2101581^2 .

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 50077954 + ... + 50325362.

Almost surely, 2^{12420342004122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12420342004122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14732193719880).

12420342004122 is an abundant number, since it is smaller than the sum of its proper divisors (17044045435638).

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

12420342004122 is a wasteful number, since it uses less digits than its factorization.

12420342004122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251008 (or 251005 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 12420342004122 its reverse (22140024302421), we get a palindrome (34560366306543).

The spelling of 12420342004122 in words is "twelve trillion, four hundred twenty billion, three hundred forty-two million, four thousand, one hundred twenty-two".