13424040243 has 12 divisors (see below), whose sum is σ = 19420444680. Its totient is φ = 8935438176.

The previous prime is 13424040209. The next prime is 13424040247. The reversal of 13424040243 is 34204042431.

It is a happy number.

13424040243 is a `hidden beast` number, since 1 + 342 + 40 + 40 + 243 = 666.

It is not a de Polignac number, because 13424040243 - 2¹² = 13424036147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13424040247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1154058 + ... + 1165631.

It is an arithmetic number, because the mean of its divisors is an integer number (1618370390).

Almost surely, 2^13424040243 is an apocalyptic number.

13424040243 is a deficient number, since it is larger than the sum of its proper divisors (5996404437).

13424040243 is a wasteful number, since it uses less digits than its factorization.

13424040243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320338 (or 2320335 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 13424040243 its reverse (34204042431), we get a palindrome (47628082674).

The spelling of 13424040243 in words is "thirteen billion, four hundred twenty-four million, forty thousand, two hundred forty-three".