1123124020 has 12 divisors (see below), whose sum is σ = 2358560484. Its totient is φ = 449249600.

The previous prime is 1123124003. The next prime is 1123124021. The reversal of 1123124020 is 204213211.

It can be written as a sum of positive squares in 2 ways, for example, as 436893604 + 686230416 = 20902^2 + 26196^2 .

It is a super-2 number, since 2×1123124020² = 2522815128601920800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123123985 and 1123124003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123124021) 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, 28078081 + ... + 28078120.

It is an arithmetic number, because the mean of its divisors is an integer number (196546707).

Almost surely, 2^1123124020 is an apocalyptic number.

1123124020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123124020 is an abundant number, since it is smaller than the sum of its proper divisors (1235436464).

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

1123124020 is a wasteful number, since it uses less digits than its factorization.

1123124020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56156210 (or 56156208 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1123124020 is about 33513.0425357054. The cubic root of 1123124020 is about 1039.4634868324.

Adding to 1123124020 its reverse (204213211), we get a palindrome (1327337231).

The spelling of 1123124020 in words is "one billion, one hundred twenty-three million, one hundred twenty-four thousand, twenty".