12421340334 has 64 divisors (see below), whose sum is σ = 29804544000. Its totient is φ = 3811889376.

The previous prime is 12421340303. The next prime is 12421340401. The reversal of 12421340334 is 43304312421.

12421340334 is a `hidden beast` number, since 1 + 242 + 13 + 403 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12421340298 and 12421340307.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 245767 + ... + 291965.

It is an arithmetic number, because the mean of its divisors is an integer number (465696000).

Almost surely, 2^12421340334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12421340334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14902272000).

12421340334 is an abundant number, since it is smaller than the sum of its proper divisors (17383203666).

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

12421340334 is a wasteful number, since it uses less digits than its factorization.

12421340334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46606 (or 46600 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 12421340334 its reverse (43304312421), we get a palindrome (55725652755).

The spelling of 12421340334 in words is "twelve billion, four hundred twenty-one million, three hundred forty thousand, three hundred thirty-four".