11043140123 has 4 divisors (see below), whose sum is σ = 11176190088. Its totient is φ = 10910090160.

The previous prime is 11043140113. The next prime is 11043140131. The reversal of 11043140123 is 32104134011.

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 11043140123 - 2⁸ = 11043139867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11043140095 and 11043140104.

It is not an unprimeable number, because it can be changed into a prime (11043140113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66524858 + ... + 66525023.

It is an arithmetic number, because the mean of its divisors is an integer number (2794047522).

Almost surely, 2^11043140123 is an apocalyptic number.

11043140123 is a deficient number, since it is larger than the sum of its proper divisors (133049965).

11043140123 is an equidigital number, since it uses as much as digits as its factorization.

11043140123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133049964.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11043140123 its reverse (32104134011), we get a palindrome (43147274134).

The spelling of 11043140123 in words is "eleven billion, forty-three million, one hundred forty thousand, one hundred twenty-three".