1111144243 has 16 divisors (see below), whose sum is σ = 1229760000. Its totient is φ = 995510880.

The previous prime is 1111144231. The next prime is 1111144267. The reversal of 1111144243 is 3424411111.

It is a cyclic number.

It is not a de Polignac number, because 1111144243 - 2¹³ = 1111136051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111144543) 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, 740508 + ... + 742006.

It is an arithmetic number, because the mean of its divisors is an integer number (76860000).

Almost surely, 2^1111144243 is an apocalyptic number.

1111144243 is a deficient number, since it is larger than the sum of its proper divisors (118615757).

1111144243 is a wasteful number, since it uses less digits than its factorization.

1111144243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442.

The product of its digits is 384, while the sum is 22.

The square root of 1111144243 is about 33333.8303079619. The cubic root of 1111144243 is about 1035.7544633972.

Adding to 1111144243 its reverse (3424411111), we get a palindrome (4535555354).

The spelling of 1111144243 in words is "one billion, one hundred eleven million, one hundred forty-four thousand, two hundred forty-three".