1121800752 has 60 divisors (see below), whose sum is σ = 3255772520. Its totient is φ = 373932288.

The previous prime is 1121800739. The next prime is 1121800759. The reversal of 1121800752 is 2570081211.

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

It is not an unprimeable number, because it can be changed into a prime (1121800759) 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 11 ways as a sum of consecutive naturals, for example, 140377 + ... + 148152.

Almost surely, 2^1121800752 is an apocalyptic number.

1121800752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121800752 is an abundant number, since it is smaller than the sum of its proper divisors (2133971768).

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

1121800752 is an equidigital number, since it uses as much as digits as its factorization.

1121800752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288552 (or 288534 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1121800752 is about 33493.2941347966. The cubic root of 1121800752 is about 1039.0550934284.

Adding to 1121800752 its reverse (2570081211), we get a palindrome (3691881963).

The spelling of 1121800752 in words is "one billion, one hundred twenty-one million, eight hundred thousand, seven hundred fifty-two".