111738123 has 40 divisors (see below), whose sum is σ = 195241728. Its totient is φ = 62351856.

The previous prime is 111738101. The next prime is 111738139. The reversal of 111738123 is 321837111.

It is a happy number.

It is not a de Polignac number, because 111738123 - 2⁸ = 111737867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (111733123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22090 + ... + 26672.

Almost surely, 2^111738123 is an apocalyptic number.

111738123 is a deficient number, since it is larger than the sum of its proper divisors (83503605).

111738123 is an equidigital number, since it uses as much as digits as its factorization.

111738123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645 (or 4636 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 111738123 is about 10570.6254781825. The cubic root of 111738123 is about 481.6524686744.

The spelling of 111738123 in words is "one hundred eleven million, seven hundred thirty-eight thousand, one hundred twenty-three".