1115120144 has 10 divisors (see below), whose sum is σ = 2160545310. Its totient is φ = 557560064.

The previous prime is 1115120141. The next prime is 1115120179. The reversal of 1115120144 is 4410215111.

It can be written as a sum of positive squares in only one way, i.e., 1111555600 + 3564544 = 33340^2 + 1888^2 .

It is not an unprimeable number, because it can be changed into a prime (1115120141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34847489 + ... + 34847520.

It is an arithmetic number, because the mean of its divisors is an integer number (216054531).

Almost surely, 2^1115120144 is an apocalyptic number.

It is an amenable number.

1115120144 is a deficient number, since it is larger than the sum of its proper divisors (1045425166).

1115120144 is an equidigital number, since it uses as much as digits as its factorization.

1115120144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69695017 (or 69695011 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1115120144 is about 33393.4146801431. The cubic root of 1115120144 is about 1036.9883731629.

Adding to 1115120144 its reverse (4410215111), we get a palindrome (5525335255).

The spelling of 1115120144 in words is "one billion, one hundred fifteen million, one hundred twenty thousand, one hundred forty-four".