1140020509 has 2 divisors, whose sum is σ = 1140020510. Its totient is φ = 1140020508.

The previous prime is 1140020473. The next prime is 1140020543. The reversal of 1140020509 is 9050200411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960380100 + 179640409 = 30990^2 + 13403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140020509 - 2⁹ = 1140019997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1140020509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140020549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570010254 + 570010255.

It is an arithmetic number, because the mean of its divisors is an integer number (570010255).

Almost surely, 2^1140020509 is an apocalyptic number.

It is an amenable number.

1140020509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140020509 is an equidigital number, since it uses as much as digits as its factorization.

1140020509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1140020509 is about 33764.1897429807. The cubic root of 1140020509 is about 1044.6501912883.

The spelling of 1140020509 in words is "one billion, one hundred forty million, twenty thousand, five hundred nine".