1123424040 has 128 divisors (see below), whose sum is σ = 3552854400. Its totient is φ = 283745280.

The previous prime is 1123424009. The next prime is 1123424047. The reversal of 1123424040 is 404243211.

It is a junction number, because it is equal to n+sod(n) for n = 1123423998 and 1123424016.

It is not an unprimeable number, because it can be changed into a prime (1123424047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181395 + ... + 187485.

It is an arithmetic number, because the mean of its divisors is an integer number (27756675).

Almost surely, 2^1123424040 is an apocalyptic number.

1123424040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123424040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1776427200).

1123424040 is an abundant number, since it is smaller than the sum of its proper divisors (2429430360).

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

1123424040 is a wasteful number, since it uses less digits than its factorization.

1123424040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6187 (or 6183 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1123424040 is about 33517.5184045597. The cubic root of 1123424040 is about 1039.5560358489.

Adding to 1123424040 its reverse (404243211), we get a palindrome (1527667251).

The spelling of 1123424040 in words is "one billion, one hundred twenty-three million, four hundred twenty-four thousand, forty".