1123423 has 12 divisors (see below), whose sum is σ = 1325592. Its totient is φ = 949200.

The previous prime is 1123403. The next prime is 1123427. The reversal of 1123423 is 3243211.

It is a happy number.

It is not a de Polignac number, because 1123423 - 2⁵ = 1123391 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1123397 and 1123406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4836 + ... + 5062.

It is an arithmetic number, because the mean of its divisors is an integer number (110466).

2^1123423 is an apocalyptic number.

1123423 is a deficient number, since it is larger than the sum of its proper divisors (202169).

1123423 is a wasteful number, since it uses less digits than its factorization.

1123423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 335 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 1123423 is about 1059.9165061456. The cubic root of 1123423 is about 103.9555715062.

Adding to 1123423 its reverse (3243211), we get a palindrome (4366634).

The spelling of 1123423 in words is "one million, one hundred twenty-three thousand, four hundred twenty-three".