11420123243 has 2 divisors, whose sum is σ = 11420123244. Its totient is φ = 11420123242.

The previous prime is 11420123191. The next prime is 11420123311. The reversal of 11420123243 is 34232102411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11420123243 - 2²⁴ = 11403346027 is a prime.

It is not a weakly prime, because it can be changed into another prime (11420123443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710061621 + 5710061622.

It is an arithmetic number, because the mean of its divisors is an integer number (5710061622).

Almost surely, 2^11420123243 is an apocalyptic number.

11420123243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11420123243 is an equidigital number, since it uses as much as digits as its factorization.

11420123243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 11420123243 its reverse (34232102411), we get a palindrome (45652225654).

The spelling of 11420123243 in words is "eleven billion, four hundred twenty million, one hundred twenty-three thousand, two hundred forty-three".