115117123 has 4 divisors (see below), whose sum is σ = 125582328. Its totient is φ = 104651920.

The previous prime is 115117111. The next prime is 115117129. The reversal of 115117123 is 321711511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115117123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115117094 and 115117103.

It is not an unprimeable number, because it can be changed into a prime (115117129) 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, 5232586 + ... + 5232607.

It is an arithmetic number, because the mean of its divisors is an integer number (31395582).

Almost surely, 2^115117123 is an apocalyptic number.

115117123 is a deficient number, since it is larger than the sum of its proper divisors (10465205).

115117123 is a wasteful number, since it uses less digits than its factorization.

115117123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10465204.

The product of its digits is 210, while the sum is 22.

The square root of 115117123 is about 10729.2647930788. The cubic root of 115117123 is about 486.4594477053.

Adding to 115117123 its reverse (321711511), we get a palindrome (436828634).

The spelling of 115117123 in words is "one hundred fifteen million, one hundred seventeen thousand, one hundred twenty-three".