117205247 has 2 divisors, whose sum is σ = 117205248. Its totient is φ = 117205246.

The previous prime is 117205241. The next prime is 117205267. The reversal of 117205247 is 742502711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117205247 - 2⁸ = 117204991 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 (117205241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58602623 + 58602624.

It is an arithmetic number, because the mean of its divisors is an integer number (58602624).

Almost surely, 2^117205247 is an apocalyptic number.

117205247 is a deficient number, since it is larger than the sum of its proper divisors (1).

117205247 is an equidigital number, since it uses as much as digits as its factorization.

117205247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 117205247 is about 10826.1372150920. The cubic root of 117205247 is about 489.3831568880.

Adding to 117205247 its reverse (742502711), we get a palindrome (859707958).

The spelling of 117205247 in words is "one hundred seventeen million, two hundred five thousand, two hundred forty-seven".