11430421243 has 4 divisors (see below), whose sum is σ = 11443024600. Its totient is φ = 11417817888.

The previous prime is 11430421237. The next prime is 11430421309. The reversal of 11430421243 is 34212403411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11430421243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11430421213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6300318 + ... + 6302131.

It is an arithmetic number, because the mean of its divisors is an integer number (2860756150).

Almost surely, 2^11430421243 is an apocalyptic number.

11430421243 is a deficient number, since it is larger than the sum of its proper divisors (12603357).

11430421243 is an equidigital number, since it uses as much as digits as its factorization.

11430421243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12603356.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 11430421243 its reverse (34212403411), we get a palindrome (45642824654).

The spelling of 11430421243 in words is "eleven billion, four hundred thirty million, four hundred twenty-one thousand, two hundred forty-three".