1123943040 has 512 divisors, whose sum is σ = 4456339200. Its totient is φ = 268738560.

The previous prime is 1123943039. The next prime is 1123943059. The reversal of 1123943040 is 403493211.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1123942995 and 1123943013.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 1314 × 990 × 864.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15396444 + ... + 15396516.

Almost surely, 2^1123943040 is an apocalyptic number.

1123943040 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 1123943040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2228169600).

1123943040 is an abundant number, since it is smaller than the sum of its proper divisors (3332396160).

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

1123943040 is an frugal number, since it uses more digits than its factorization.

1123943040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1123943040 is about 33525.2597305375. The cubic root of 1123943040 is about 1039.7160960757.

The spelling of 1123943040 in words is "one billion, one hundred twenty-three million, nine hundred forty-three thousand, forty".