1115123 has 4 divisors (see below), whose sum is σ = 1119720. Its totient is φ = 1110528.

The previous prime is 1115117. The next prime is 1115131. The reversal of 1115123 is 3215111.

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-1115123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1115098 and 1115107.

It is not an unprimeable number, because it can be changed into a prime (1115113) 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, 1913 + ... + 2426.

It is an arithmetic number, because the mean of its divisors is an integer number (279930).

2^1115123 is an apocalyptic number.

1115123 is a deficient number, since it is larger than the sum of its proper divisors (4597).

1115123 is an equidigital number, since it uses as much as digits as its factorization.

1115123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596.

The product of its digits is 30, while the sum is 14.

The square root of 1115123 is about 1055.9938446790. The cubic root of 1115123 is about 103.6989258460.

The spelling of 1115123 in words is "one million, one hundred fifteen thousand, one hundred twenty-three".