240638117 has 2 divisors, whose sum is σ = 240638118. Its totient is φ = 240638116.

The previous prime is 240638081. The next prime is 240638131. The reversal of 240638117 is 711836042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133494916 + 107143201 = 11554^2 + 10351^2 .

It is a cyclic number.

It is not a de Polignac number, because 240638117 - 2²⁶ = 173529253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240638137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120319058 + 120319059.

It is an arithmetic number, because the mean of its divisors is an integer number (120319059).

Almost surely, 2^240638117 is an apocalyptic number.

It is an amenable number.

240638117 is a deficient number, since it is larger than the sum of its proper divisors (1).

240638117 is an equidigital number, since it uses as much as digits as its factorization.

240638117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 240638117 is about 15512.5148509196. The cubic root of 240638117 is about 621.9967854109.

The spelling of 240638117 in words is "two hundred forty million, six hundred thirty-eight thousand, one hundred seventeen".