199123 has 4 divisors (see below), whose sum is σ = 200448. Its totient is φ = 197800.

The previous prime is 199109. The next prime is 199151. The reversal of 199123 is 321991.

199123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199123 is a prime.

It is a Duffinian number.

199123 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199103) 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, 403 + ... + 748.

It is an arithmetic number, because the mean of its divisors is an integer number (50112).

2¹⁹⁹¹²³ is an apocalyptic number.

199123 is a deficient number, since it is larger than the sum of its proper divisors (1325).

199123 is a wasteful number, since it uses less digits than its factorization.

199123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its digits is 486, while the sum is 25.

The square root of 199123 is about 446.2320024382. The cubic root of 199123 is about 58.3947507323.

The spelling of 199123 in words is "one hundred ninety-nine thousand, one hundred twenty-three".