1111241243 has 4 divisors (see below), whose sum is σ = 1269990000. Its totient is φ = 952492488.

The previous prime is 1111241231. The next prime is 1111241249. The reversal of 1111241243 is 3421421111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3421421111 = 421 ⋅8126891.

It is a cyclic number.

It is not a de Polignac number, because 1111241243 - 2¹⁴ = 1111224859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111241249) 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 3 ways as a sum of consecutive naturals, for example, 79374368 + ... + 79374381.

It is an arithmetic number, because the mean of its divisors is an integer number (317497500).

Almost surely, 2^1111241243 is an apocalyptic number.

1111241243 is a deficient number, since it is larger than the sum of its proper divisors (158748757).

1111241243 is an equidigital number, since it uses as much as digits as its factorization.

1111241243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158748756.

The product of its digits is 192, while the sum is 20.

The square root of 1111241243 is about 33335.2852545167. The cubic root of 1111241243 is about 1035.7846020763.

Adding to 1111241243 its reverse (3421421111), we get a palindrome (4532662354).

The spelling of 1111241243 in words is "one billion, one hundred eleven million, two hundred forty-one thousand, two hundred forty-three".