1143115241 has 4 divisors (see below), whose sum is σ = 1210357332. Its totient is φ = 1075873152.

The previous prime is 1143115223. The next prime is 1143115277. The reversal of 1143115241 is 1425113411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1425113411 = 19 ⋅75005969.

It can be written as a sum of positive squares in 2 ways, for example, as 811110400 + 332004841 = 28480^2 + 18221^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1143115241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1143115201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 33621020 + ... + 33621053.

It is an arithmetic number, because the mean of its divisors is an integer number (302589333).

Almost surely, 2^1143115241 is an apocalyptic number.

It is an amenable number.

1143115241 is a deficient number, since it is larger than the sum of its proper divisors (67242091).

1143115241 is an equidigital number, since it uses as much as digits as its factorization.

1143115241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67242090.

The product of its digits is 480, while the sum is 23.

The square root of 1143115241 is about 33809.9872966554. The cubic root of 1143115241 is about 1045.5946162260.

Adding to 1143115241 its reverse (1425113411), we get a palindrome (2568228652).

The spelling of 1143115241 in words is "one billion, one hundred forty-three million, one hundred fifteen thousand, two hundred forty-one".