1126720128 has 32 divisors (see below), whose sum is σ = 2992851360. Its totient is φ = 375573248.

The previous prime is 1126720123. The next prime is 1126720129. The reversal of 1126720128 is 8210276211.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 1126720095 and 1126720104.

It is not an unprimeable number, because it can be changed into a prime (1126720123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1466700 + ... + 1467467.

It is an arithmetic number, because the mean of its divisors is an integer number (93526605).

Almost surely, 2^1126720128 is an apocalyptic number.

It is an amenable number.

1126720128 is an abundant number, since it is smaller than the sum of its proper divisors (1866131232).

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

1126720128 is an equidigital number, since it uses as much as digits as its factorization.

1126720128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934184 (or 2934172 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 1126720128 is about 33566.6520225059. The cubic root of 1126720128 is about 1040.5717172116.

Adding to 1126720128 its reverse (8210276211), we get a palindrome (9336996339).

The spelling of 1126720128 in words is "one billion, one hundred twenty-six million, seven hundred twenty thousand, one hundred twenty-eight".