1223123 has 8 divisors (see below), whose sum is σ = 1342656. Its totient is φ = 1105000.

The previous prime is 1223119. The next prime is 1223149. The reversal of 1223123 is 3213221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223123 - 2² = 1223119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223098 and 1223107.

It is not an unprimeable number, because it can be changed into a prime (1223323) 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 7 ways as a sum of consecutive naturals, for example, 2540 + ... + 2982.

It is an arithmetic number, because the mean of its divisors is an integer number (167832).

2^1223123 is an apocalyptic number.

1223123 is a deficient number, since it is larger than the sum of its proper divisors (119533).

1223123 is a wasteful number, since it uses less digits than its factorization.

1223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705.

The product of its digits is 72, while the sum is 14.

The square root of 1223123 is about 1105.9489138292. The cubic root of 1223123 is about 106.9440706920.

Adding to 1223123 its reverse (3213221), we get a palindrome (4436344).

The spelling of 1223123 in words is "one million, two hundred twenty-three thousand, one hundred twenty-three".