12422347442 has 18 divisors (see below), whose sum is σ = 19004510973. Its totient is φ = 6089883592.

The previous prime is 12422347433. The next prime is 12422347451. The reversal of 12422347442 is 24474322421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12422347433) and next prime (12422347451).

It can be written as a sum of positive squares in 2 ways, for example, as 11783319601 + 639027841 = 108551^2 + 25279^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78811.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8353223 + ... + 8354709.

Almost surely, 2^12422347442 is an apocalyptic number.

12422347442 is a deficient number, since it is larger than the sum of its proper divisors (6582163531).

12422347442 is an frugal number, since it uses more digits than its factorization.

12422347442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082 (or 1542 counting only the distinct ones).

The product of its digits is 86016, while the sum is 35.

Adding to 12422347442 its reverse (24474322421), we get a palindrome (36896669863).

The spelling of 12422347442 in words is "twelve billion, four hundred twenty-two million, three hundred forty-seven thousand, four hundred forty-two".