1140235309 has 2 divisors, whose sum is σ = 1140235310. Its totient is φ = 1140235308.

The previous prime is 1140235267. The next prime is 1140235319. The reversal of 1140235309 is 9035320411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987342084 + 152893225 = 31422^2 + 12365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140235309 - 2¹¹ = 1140233261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140235319) 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, 570117654 + 570117655.

It is an arithmetic number, because the mean of its divisors is an integer number (570117655).

Almost surely, 2^1140235309 is an apocalyptic number.

It is an amenable number.

1140235309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140235309 is an equidigital number, since it uses as much as digits as its factorization.

1140235309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1140235309 is about 33767.3704780221. The cubic root of 1140235309 is about 1044.7157973506.

The spelling of 1140235309 in words is "one billion, one hundred forty million, two hundred thirty-five thousand, three hundred nine".