1121750720 has 28 divisors (see below), whose sum is σ = 2671169664. Its totient is φ = 448700160.

The previous prime is 1121750689. The next prime is 1121750723. The reversal of 1121750720 is 270571211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121750720.

It is not an unprimeable number, because it can be changed into a prime (1121750723) 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, 1752416 + ... + 1753055.

Almost surely, 2^1121750720 is an apocalyptic number.

1121750720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121750720 is an abundant number, since it is smaller than the sum of its proper divisors (1549418944).

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

1121750720 is an equidigital number, since it uses as much as digits as its factorization.

1121750720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505488 (or 3505478 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 1121750720 is about 33492.5472306900. The cubic root of 1121750720 is about 1039.0396460099.

The spelling of 1121750720 in words is "one billion, one hundred twenty-one million, seven hundred fifty thousand, seven hundred twenty".