111424123 has 2 divisors, whose sum is σ = 111424124. Its totient is φ = 111424122.

The previous prime is 111424067. The next prime is 111424127. The reversal of 111424123 is 321424111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111424123 - 2²⁵ = 77869691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111424123.

It is not a weakly prime, because it can be changed into another prime (111424127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55712061 + 55712062.

It is an arithmetic number, because the mean of its divisors is an integer number (55712062).

Almost surely, 2^111424123 is an apocalyptic number.

111424123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111424123 is an equidigital number, since it uses as much as digits as its factorization.

111424123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 111424123 is about 10555.7625494324. The cubic root of 111424123 is about 481.2008747742.

Adding to 111424123 its reverse (321424111), we get a palindrome (432848234).

The spelling of 111424123 in words is "one hundred eleven million, four hundred twenty-four thousand, one hundred twenty-three".