118423 has 2 divisors, whose sum is σ = 118424. Its totient is φ = 118422.

The previous prime is 118411. The next prime is 118429. The reversal of 118423 is 324811.

It is a strong prime.

It is an emirp because it is prime and its reverse (324811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118423 - 2⁹ = 117911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59211 + 59212.

It is an arithmetic number, because the mean of its divisors is an integer number (59212).

2¹¹⁸⁴²³ is an apocalyptic number.

118423 is a deficient number, since it is larger than the sum of its proper divisors (1).

118423 is an equidigital number, since it uses as much as digits as its factorization.

118423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 118423 is about 344.1264302549. The cubic root of 118423 is about 49.1072204391.

The spelling of 118423 in words is "one hundred eighteen thousand, four hundred twenty-three".