1140868121 has 2 divisors, whose sum is σ = 1140868122. Its totient is φ = 1140868120.

The previous prime is 1140868093. The next prime is 1140868123. The reversal of 1140868121 is 1218680411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988222096 + 152646025 = 31436^2 + 12355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140868121 - 2¹⁴ = 1140851737 is a prime.

Together with 1140868123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1140868123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570434060 + 570434061.

It is an arithmetic number, because the mean of its divisors is an integer number (570434061).

Almost surely, 2^1140868121 is an apocalyptic number.

It is an amenable number.

1140868121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140868121 is an equidigital number, since it uses as much as digits as its factorization.

1140868121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 1140868121 is about 33776.7393482556. The cubic root of 1140868121 is about 1044.9090283513.

The spelling of 1140868121 in words is "one billion, one hundred forty million, eight hundred sixty-eight thousand, one hundred twenty-one".