12423412234242 has 120 divisors (see below), whose sum is σ = 28526514616908. Its totient is φ = 4040694927360.

The previous prime is 12423412234231. The next prime is 12423412234249. The reversal of 12423412234242 is 24243221432421.

12423412234242 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 3 + 4 + 1 + 223 + 424 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11999427632361 + 423984601881 = 3464019^2 + 651141^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12423412234197 and 12423412234206.

It is not an unprimeable number, because it can be changed into a prime (12423412234249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 79135858 + ... + 79292690.

Almost surely, 2^{12423412234242} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12423412234242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14263257308454).

12423412234242 is an abundant number, since it is smaller than the sum of its proper divisors (16103102382666).

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

12423412234242 is an equidigital number, since it uses as much as digits as its factorization.

12423412234242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157086 (or 157006 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

Adding to 12423412234242 its reverse (24243221432421), we get a palindrome (36666633666663).

The spelling of 12423412234242 in words is "twelve trillion, four hundred twenty-three billion, four hundred twelve million, two hundred thirty-four thousand, two hundred forty-two".