118403 has 4 divisors (see below), whose sum is σ = 119280. Its totient is φ = 117528.

The previous prime is 118399. The next prime is 118409. The reversal of 118403 is 304811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 304811 = 13 ⋅23447.

It is a cyclic number.

It is not a de Polignac number, because 118403 - 2² = 118399 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188 + ... + 521.

It is an arithmetic number, because the mean of its divisors is an integer number (29820).

2¹¹⁸⁴⁰³ is an apocalyptic number.

118403 is a deficient number, since it is larger than the sum of its proper divisors (877).

118403 is an equidigital number, since it uses as much as digits as its factorization.

118403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 118403 is about 344.0973699405. The cubic root of 118403 is about 49.1044557743.

The spelling of 118403 in words is "one hundred eighteen thousand, four hundred three".