118247 has 2 divisors, whose sum is σ = 118248. Its totient is φ = 118246.

The previous prime is 118219. The next prime is 118249. The reversal of 118247 is 742811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118247 - 2⁸ = 117991 is a prime.

Together with 118249, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59123 + 59124.

It is an arithmetic number, because the mean of its divisors is an integer number (59124).

2¹¹⁸²⁴⁷ is an apocalyptic number.

118247 is a deficient number, since it is larger than the sum of its proper divisors (1).

118247 is an equidigital number, since it uses as much as digits as its factorization.

118247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 23.

The square root of 118247 is about 343.8706152029. The cubic root of 118247 is about 49.0828806965.

The spelling of 118247 in words is "one hundred eighteen thousand, two hundred forty-seven".