12402340243 has 16 divisors (see below), whose sum is σ = 12625113600. Its totient is φ = 12182191840.

The previous prime is 12402340241. The next prime is 12402340333. The reversal of 12402340243 is 34204320421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12402340243 - 2¹ = 12402340241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12402340241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5603205 + ... + 5605417.

It is an arithmetic number, because the mean of its divisors is an integer number (789069600).

Almost surely, 2^12402340243 is an apocalyptic number.

12402340243 is a deficient number, since it is larger than the sum of its proper divisors (222773357).

12402340243 is a wasteful number, since it uses less digits than its factorization.

12402340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 12402340243 its reverse (34204320421), we get a palindrome (46606660664).

The spelling of 12402340243 in words is "twelve billion, four hundred two million, three hundred forty thousand, two hundred forty-three".