1111424243 has 4 divisors (see below), whose sum is σ = 1111491960. Its totient is φ = 1111356528.

The previous prime is 1111424233. The next prime is 1111424287. The reversal of 1111424243 is 3424241111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1111424243 - 2¹⁰ = 1111423219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111424233) 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, 8063 + ... + 47831.

It is an arithmetic number, because the mean of its divisors is an integer number (277872990).

Almost surely, 2^1111424243 is an apocalyptic number.

1111424243 is a deficient number, since it is larger than the sum of its proper divisors (67717).

1111424243 is an equidigital number, since it uses as much as digits as its factorization.

1111424243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67716.

The product of its digits is 768, while the sum is 23.

The square root of 1111424243 is about 33338.0299807892. The cubic root of 1111424243 is about 1035.8414568710.

Adding to 1111424243 its reverse (3424241111), we get a palindrome (4535665354).

The spelling of 1111424243 in words is "one billion, one hundred eleven million, four hundred twenty-four thousand, two hundred forty-three".