140665241 has 2 divisors, whose sum is σ = 140665242. Its totient is φ = 140665240.

The previous prime is 140665237. The next prime is 140665247. The reversal of 140665241 is 142566041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132342016 + 8323225 = 11504^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 140665241 - 2² = 140665237 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140665247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70332620 + 70332621.

It is an arithmetic number, because the mean of its divisors is an integer number (70332621).

Almost surely, 2^140665241 is an apocalyptic number.

It is an amenable number.

140665241 is a deficient number, since it is larger than the sum of its proper divisors (1).

140665241 is an equidigital number, since it uses as much as digits as its factorization.

140665241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 140665241 is about 11860.2378138046. The cubic root of 140665241 is about 520.0705537897.

The spelling of 140665241 in words is "one hundred forty million, six hundred sixty-five thousand, two hundred forty-one".