118478 has 4 divisors (see below), whose sum is σ = 177720. Its totient is φ = 59238.

The previous prime is 118471. The next prime is 118493. The reversal of 118478 is 874811.

118478 is nontrivially palindromic in base 11.

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

It is a self number, because there is not a number n which added to its sum of digits gives 118478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118471) by changing a digit.

118478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 29618 + ... + 29621.

It is an arithmetic number, because the mean of its divisors is an integer number (44430).

2¹¹⁸⁴⁷⁸ is an apocalyptic number.

118478 is a deficient number, since it is larger than the sum of its proper divisors (59242).

118478 is an equidigital number, since it uses as much as digits as its factorization.

118478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59241.

The product of its digits is 1792, while the sum is 29.

The square root of 118478 is about 344.2063334687. The cubic root of 118478 is about 49.1148216627.

The spelling of 118478 in words is "one hundred eighteen thousand, four hundred seventy-eight".