240858161 has 2 divisors, whose sum is σ = 240858162. Its totient is φ = 240858160.

The previous prime is 240858143. The next prime is 240858169. The reversal of 240858161 is 161858042.

240858161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191296561 + 49561600 = 13831^2 + 7040^2 .

It is a cyclic number.

It is not a de Polignac number, because 240858161 - 2⁶ = 240858097 is a prime.

It is not a weakly prime, because it can be changed into another prime (240858169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120429080 + 120429081.

It is an arithmetic number, because the mean of its divisors is an integer number (120429081).

Almost surely, 2^240858161 is an apocalyptic number.

It is an amenable number.

240858161 is a deficient number, since it is larger than the sum of its proper divisors (1).

240858161 is an equidigital number, since it uses as much as digits as its factorization.

240858161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 240858161 is about 15519.6056973107. The cubic root of 240858161 is about 622.1863161548.

The spelling of 240858161 in words is "two hundred forty million, eight hundred fifty-eight thousand, one hundred sixty-one".