1111123043 has 8 divisors (see below), whose sum is σ = 1177840512. Its totient is φ = 1044556416.

The previous prime is 1111123007. The next prime is 1111123051. The reversal of 1111123043 is 3403211111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111123043 - 2⁶ = 1111122979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1111123003) 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 7 ways as a sum of consecutive naturals, for example, 22355 + ... + 52172.

It is an arithmetic number, because the mean of its divisors is an integer number (147230064).

Almost surely, 2^1111123043 is an apocalyptic number.

1111123043 is a deficient number, since it is larger than the sum of its proper divisors (66717469).

1111123043 is an equidigital number, since it uses as much as digits as its factorization.

1111123043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75421.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1111123043 is about 33333.5123111862. The cubic root of 1111123043 is about 1035.7478761533.

Adding to 1111123043 its reverse (3403211111), we get a palindrome (4514334154).

The spelling of 1111123043 in words is "one billion, one hundred eleven million, one hundred twenty-three thousand, forty-three".