119805 has 24 divisors (see below), whose sum is σ = 224352. Its totient is φ = 54432.

The previous prime is 119797. The next prime is 119809. The reversal of 119805 is 508911.

119805 is a nontrivial binomial coefficient, being equal to C(490, 2).

It is not a de Polignac number, because 119805 - 2³ = 119797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119809) 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 23 ways as a sum of consecutive naturals, for example, 654 + ... + 816.

It is an arithmetic number, because the mean of its divisors is an integer number (9348).

2¹¹⁹⁸⁰⁵ is an apocalyptic number.

119805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

119805 is the 489-th triangular number and also the 245-th hexagonal number.

It is an amenable number.

119805 is a deficient number, since it is larger than the sum of its proper divisors (104547).

119805 is a wasteful number, since it uses less digits than its factorization.

119805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 119805 is about 346.1285888221. The cubic root of 119805 is about 49.2975097042.

The spelling of 119805 in words is "one hundred nineteen thousand, eight hundred five".