118408243 has 4 divisors (see below), whose sum is σ = 118667800. Its totient is φ = 118148688.

The previous prime is 118408237. The next prime is 118408261. The reversal of 118408243 is 342804811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118408243 - 2⁵ = 118408211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118406243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129093 + ... + 130006.

It is an arithmetic number, because the mean of its divisors is an integer number (29666950).

Almost surely, 2^118408243 is an apocalyptic number.

118408243 is a deficient number, since it is larger than the sum of its proper divisors (259557).

118408243 is an equidigital number, since it uses as much as digits as its factorization.

118408243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259556.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 118408243 is about 10881.5551737792. Note that the first 3 decimals coincide. The cubic root of 118408243 is about 491.0518056125.

The spelling of 118408243 in words is "one hundred eighteen million, four hundred eight thousand, two hundred forty-three".