1123243134 has 64 divisors (see below), whose sum is σ = 2586221568. Its totient is φ = 322502400.

The previous prime is 1123243129. The next prime is 1123243139. The reversal of 1123243134 is 4313423211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1123243129) and next prime (1123243139).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123243139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65919 + ... + 81189.

It is an arithmetic number, because the mean of its divisors is an integer number (40409712).

Almost surely, 2^1123243134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123243134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1293110784).

1123243134 is an abundant number, since it is smaller than the sum of its proper divisors (1462978434).

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

1123243134 is a wasteful number, since it uses less digits than its factorization.

1123243134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15353.

The product of its digits is 1728, while the sum is 24.

The square root of 1123243134 is about 33514.8196175960. The cubic root of 1123243134 is about 1039.5002326339.

Adding to 1123243134 its reverse (4313423211), we get a palindrome (5436666345).

The spelling of 1123243134 in words is "one billion, one hundred twenty-three million, two hundred forty-three thousand, one hundred thirty-four".