240974161 has 2 divisors, whose sum is σ = 240974162. Its totient is φ = 240974160.

The previous prime is 240974159. The next prime is 240974171. The reversal of 240974161 is 161479042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210105025 + 30869136 = 14495^2 + 5556^2 .

It is a cyclic number.

It is not a de Polignac number, because 240974161 - 2¹ = 240974159 is a prime.

Together with 240974159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (240974101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120487080 + 120487081.

It is an arithmetic number, because the mean of its divisors is an integer number (120487081).

Almost surely, 2^240974161 is an apocalyptic number.

It is an amenable number.

240974161 is a deficient number, since it is larger than the sum of its proper divisors (1).

240974161 is an equidigital number, since it uses as much as digits as its factorization.

240974161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 240974161 is about 15523.3424557986. The cubic root of 240974161 is about 622.2861841005.

The spelling of 240974161 in words is "two hundred forty million, nine hundred seventy-four thousand, one hundred sixty-one".