1123143424 has 72 divisors (see below), whose sum is σ = 2423775200. Its totient is φ = 516354048.

The previous prime is 1123143397. The next prime is 1123143433. The reversal of 1123143424 is 4243413211.

It is a super-2 number, since 2×1123143424² = 2522902301748887552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1160989 + ... + 1161955.

Almost surely, 2^1123143424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123143424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1211887600).

1123143424 is an abundant number, since it is smaller than the sum of its proper divisors (1300631776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123143424 is an equidigital number, since it uses as much as digits as its factorization.

1123143424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345 (or 1331 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 1123143424 is about 33513.3320336847. The cubic root of 1123143424 is about 1039.4694730022.

Adding to 1123143424 its reverse (4243413211), we get a palindrome (5366556635).

The spelling of 1123143424 in words is "one billion, one hundred twenty-three million, one hundred forty-three thousand, four hundred twenty-four".