240166247 has 2 divisors, whose sum is σ = 240166248. Its totient is φ = 240166246.

The previous prime is 240166237. The next prime is 240166249. The reversal of 240166247 is 742661042.

240166247 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 is a cyclic number.

It is not a de Polignac number, because 240166247 - 2⁴ = 240166231 is a prime.

Together with 240166249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240166249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120083123 + 120083124.

It is an arithmetic number, because the mean of its divisors is an integer number (120083124).

Almost surely, 2^240166247 is an apocalyptic number.

240166247 is a deficient number, since it is larger than the sum of its proper divisors (1).

240166247 is an equidigital number, since it uses as much as digits as its factorization.

240166247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 240166247 is about 15497.2980548223. The cubic root of 240166247 is about 621.5899592056.

The spelling of 240166247 in words is "two hundred forty million, one hundred sixty-six thousand, two hundred forty-seven".