1122123 has 4 divisors (see below), whose sum is σ = 1496168. Its totient is φ = 748080.

The previous prime is 1122113. The next prime is 1122131. The reversal of 1122123 is 3212211.

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

It is not a de Polignac number, because 1122123 - 2⁵ = 1122091 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122099 and 1122108.

It is not an unprimeable number, because it can be changed into a prime (1122103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187018 + ... + 187023.

It is an arithmetic number, because the mean of its divisors is an integer number (374042).

2^1122123 is an apocalyptic number.

1122123 is a deficient number, since it is larger than the sum of its proper divisors (374045).

1122123 is an equidigital number, since it uses as much as digits as its factorization.

1122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374044.

The product of its digits is 24, while the sum is 12.

The square root of 1122123 is about 1059.3030727795. The cubic root of 1122123 is about 103.9154576742.

Adding to 1122123 its reverse (3212211), we get a palindrome (4334334).

The spelling of 1122123 in words is "one million, one hundred twenty-two thousand, one hundred twenty-three".