1121972752 has 80 divisors (see below), whose sum is σ = 2323601280. Its totient is φ = 523708416.

The previous prime is 1121972723. The next prime is 1121972759. The reversal of 1121972752 is 2572791211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1121972759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3329128 + ... + 3329464.

It is an arithmetic number, because the mean of its divisors is an integer number (29045016).

Almost surely, 2^1121972752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121972752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161800640).

1121972752 is an abundant number, since it is smaller than the sum of its proper divisors (1201628528).

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

1121972752 is a wasteful number, since it uses less digits than its factorization.

1121972752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 554 counting only the distinct ones).

The product of its digits is 17640, while the sum is 37.

The square root of 1121972752 is about 33495.8617145462. The cubic root of 1121972752 is about 1039.1081950577.

The spelling of 1121972752 in words is "one billion, one hundred twenty-one million, nine hundred seventy-two thousand, seven hundred fifty-two".