1165420241 has 2 divisors, whose sum is σ = 1165420242. Its totient is φ = 1165420240.

The previous prime is 1165420093. The next prime is 1165420247. The reversal of 1165420241 is 1420245611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1062499216 + 102921025 = 32596^2 + 10145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165420241 - 2¹⁴ = 1165403857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165420241.

It is not a weakly prime, because it can be changed into another prime (1165420247) 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, 582710120 + 582710121.

It is an arithmetic number, because the mean of its divisors is an integer number (582710121).

Almost surely, 2^1165420241 is an apocalyptic number.

It is an amenable number.

1165420241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165420241 is an equidigital number, since it uses as much as digits as its factorization.

1165420241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1165420241 is about 34138.2518738145. The cubic root of 1165420241 is about 1052.3515673195.

Adding to 1165420241 its reverse (1420245611), we get a palindrome (2585665852).

The spelling of 1165420241 in words is "one billion, one hundred sixty-five million, four hundred twenty thousand, two hundred forty-one".