12240040342 has 4 divisors (see below), whose sum is σ = 18360060516. Its totient is φ = 6120020170.

The previous prime is 12240040313. The next prime is 12240040357. The reversal of 12240040342 is 24304004221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 3060010084 + ... + 3060010087.

It is an arithmetic number, because the mean of its divisors is an integer number (4590015129).

Almost surely, 2^12240040342 is an apocalyptic number.

12240040342 is a deficient number, since it is larger than the sum of its proper divisors (6120020174).

12240040342 is an equidigital number, since it uses as much as digits as its factorization.

12240040342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120020173.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 12240040342 its reverse (24304004221), we get a palindrome (36544044563).

The spelling of 12240040342 in words is "twelve billion, two hundred forty million, forty thousand, three hundred forty-two".