12420342334 has 4 divisors (see below), whose sum is σ = 18630513504. Its totient is φ = 6210171166.

The previous prime is 12420342301. The next prime is 12420342391. The reversal of 12420342334 is 43324302421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43324302421 = 97 ⋅446642293.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3105085582 + ... + 3105085585.

It is an arithmetic number, because the mean of its divisors is an integer number (4657628376).

Almost surely, 2^12420342334 is an apocalyptic number.

12420342334 is a deficient number, since it is larger than the sum of its proper divisors (6210171170).

12420342334 is an equidigital number, since it uses as much as digits as its factorization.

12420342334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210171169.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 12420342334 its reverse (43324302421), we get a palindrome (55744644755).

The spelling of 12420342334 in words is "twelve billion, four hundred twenty million, three hundred forty-two thousand, three hundred thirty-four".