11123043 has 4 divisors (see below), whose sum is σ = 14830728. Its totient is φ = 7415360.

The previous prime is 11123039. The next prime is 11123069. The reversal of 11123043 is 34032111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11123043 - 2² = 11123039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11123023) 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, 1853838 + ... + 1853843.

It is an arithmetic number, because the mean of its divisors is an integer number (3707682).

Almost surely, 2^11123043 is an apocalyptic number.

11123043 is a deficient number, since it is larger than the sum of its proper divisors (3707685).

11123043 is an equidigital number, since it uses as much as digits as its factorization.

11123043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707684.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 11123043 is about 3335.1226364258. The cubic root of 11123043 is about 223.2241641147.

Adding to 11123043 its reverse (34032111), we get a palindrome (45155154).

The spelling of 11123043 in words is "eleven million, one hundred twenty-three thousand, forty-three".