12634271442 has 96 divisors (see below), whose sum is σ = 30842622720. Its totient is φ = 3711824640.

The previous prime is 12634271431. The next prime is 12634271449. The reversal of 12634271442 is 24417243621.

12634271442 is a `hidden beast` number, since 1 + 2 + 634 + 2 + 7 + 14 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12634271397 and 12634271406.

It is not an unprimeable number, because it can be changed into a prime (12634271449) 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, 436909 + ... + 464927.

It is an arithmetic number, because the mean of its divisors is an integer number (321277320).

Almost surely, 2^12634271442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12634271442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15421311360).

12634271442 is an abundant number, since it is smaller than the sum of its proper divisors (18208351278).

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

12634271442 is a wasteful number, since it uses less digits than its factorization.

12634271442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28128 (or 28125 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The spelling of 12634271442 in words is "twelve billion, six hundred thirty-four million, two hundred seventy-one thousand, four hundred forty-two".