1122455720 has 32 divisors (see below), whose sum is σ = 2526529320. Its totient is φ = 448803840.

The previous prime is 1122455689. The next prime is 1122455767. The reversal of 1122455720 is 275542211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 329132164 + 793323556 = 18142^2 + 28166^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 149660 + ... + 156980.

Almost surely, 2^1122455720 is an apocalyptic number.

1122455720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122455720 is an abundant number, since it is smaller than the sum of its proper divisors (1404073600).

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

1122455720 is a wasteful number, since it uses less digits than its factorization.

1122455720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11165 (or 11161 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 1122455720 is about 33503.0703070629. The cubic root of 1122455720 is about 1039.2572729543.

Adding to 1122455720 its reverse (275542211), we get a palindrome (1397997931).

The spelling of 1122455720 in words is "one billion, one hundred twenty-two million, four hundred fifty-five thousand, seven hundred twenty".