1140243757 has 2 divisors, whose sum is σ = 1140243758. Its totient is φ = 1140243756.

The previous prime is 1140243707. The next prime is 1140243773. The reversal of 1140243757 is 7573420411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1122317001 + 17926756 = 33501^2 + 4234^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140243757 - 2²³ = 1131855149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140243707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570121878 + 570121879.

It is an arithmetic number, because the mean of its divisors is an integer number (570121879).

Almost surely, 2^1140243757 is an apocalyptic number.

It is an amenable number.

1140243757 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140243757 is an equidigital number, since it uses as much as digits as its factorization.

1140243757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 1140243757 is about 33767.4955689640. The cubic root of 1140243757 is about 1044.7183774430.

The spelling of 1140243757 in words is "one billion, one hundred forty million, two hundred forty-three thousand, seven hundred fifty-seven".