11056742123 has 16 divisors (see below), whose sum is σ = 12681729984. Its totient is φ = 9443174400.

The previous prime is 11056742089. The next prime is 11056742129. The reversal of 11056742123 is 32124765011.

It is a cyclic number.

It is not a de Polignac number, because 11056742123 - 2⁸ = 11056741867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11056742123.

It is not an unprimeable number, because it can be changed into a prime (11056742129) 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, 3639161 + ... + 3642197.

It is an arithmetic number, because the mean of its divisors is an integer number (792608124).

Almost surely, 2^11056742123 is an apocalyptic number.

11056742123 is a deficient number, since it is larger than the sum of its proper divisors (1624987861).

11056742123 is a wasteful number, since it uses less digits than its factorization.

11056742123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 11056742123 in words is "eleven billion, fifty-six million, seven hundred forty-two thousand, one hundred twenty-three".