1123123 has 4 divisors (see below), whose sum is σ = 1144368. Its totient is φ = 1101880.

The previous prime is 1123093. The next prime is 1123127. The reversal of 1123123 is 3213211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123123 - 2¹³ = 1114931 is a prime.

It is a super-2 number, since 2×1123123² = 2522810546258, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1123127) 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, 10543 + ... + 10648.

It is an arithmetic number, because the mean of its divisors is an integer number (286092).

2^1123123 is an apocalyptic number.

1123123 is a deficient number, since it is larger than the sum of its proper divisors (21245).

1123123 is an equidigital number, since it uses as much as digits as its factorization.

1123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21244.

The product of its digits is 36, while the sum is 13.

The square root of 1123123 is about 1059.7749761152. The cubic root of 1123123 is about 103.9463172159.

Adding to 1123123 its reverse (3213211), we get a palindrome (4336334).

The spelling of 1123123 in words is "one million, one hundred twenty-three thousand, one hundred twenty-three".