1224123 has 4 divisors (see below), whose sum is σ = 1632168. Its totient is φ = 816080.

The previous prime is 1224121. The next prime is 1224131. The reversal of 1224123 is 3214221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3214221 = 3 ⋅1071407.

It is a cyclic number.

It is not a de Polignac number, because 1224123 - 2¹ = 1224121 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1224121) 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, 204018 + ... + 204023.

It is an arithmetic number, because the mean of its divisors is an integer number (408042).

2^1224123 is an apocalyptic number.

1224123 is a deficient number, since it is larger than the sum of its proper divisors (408045).

1224123 is an equidigital number, since it uses as much as digits as its factorization.

1224123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408044.

The product of its digits is 96, while the sum is 15.

The square root of 1224123 is about 1106.4009219085. The cubic root of 1224123 is about 106.9732078376.

Adding to 1224123 its reverse (3214221), we get a palindrome (4438344).

It can be divided in two parts, 122412 and 3, that multiplied together give a square (367236 = 606²).

The spelling of 1224123 in words is "one million, two hundred twenty-four thousand, one hundred twenty-three".