1121247748 has 12 divisors (see below), whose sum is σ = 1962432220. Its totient is φ = 560552832.

The previous prime is 1121247731. The next prime is 1121247781. The reversal of 1121247748 is 8477421211.

It can be written as a sum of positive squares in 2 ways, for example, as 514019584 + 607228164 = 22672^2 + 24642^2 .

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 3 ways as a sum of consecutive naturals, for example, 35488 + ... + 59176.

Almost surely, 2^1121247748 is an apocalyptic number.

It is an amenable number.

1121247748 is a deficient number, since it is larger than the sum of its proper divisors (841184472).

1121247748 is a wasteful number, since it uses less digits than its factorization.

1121247748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35526 (or 35524 counting only the distinct ones).

The product of its digits is 25088, while the sum is 37.

The square root of 1121247748 is about 33485.0376735640. The cubic root of 1121247748 is about 1038.8843274921.

Adding to 1121247748 its reverse (8477421211), we get a palindrome (9598668959).

The spelling of 1121247748 in words is "one billion, one hundred twenty-one million, two hundred forty-seven thousand, seven hundred forty-eight".