190123 has 4 divisors (see below), whose sum is σ = 196288. Its totient is φ = 183960.

The previous prime is 190121. The next prime is 190129. The reversal of 190123 is 321091.

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

It is a cyclic number.

It is not a de Polignac number, because 190123 - 2¹ = 190121 is a prime.

It is a super-2 number, since 2×190123² = 72293510258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190097 and 190106.

It is not an unprimeable number, because it can be changed into a prime (190121) 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 in 3 ways as a sum of consecutive naturals, for example, 3036 + ... + 3097.

It is an arithmetic number, because the mean of its divisors is an integer number (49072).

2¹⁹⁰¹²³ is an apocalyptic number.

190123 is a deficient number, since it is larger than the sum of its proper divisors (6165).

190123 is an equidigital number, since it uses as much as digits as its factorization.

190123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 190123 is about 436.0309622034. The cubic root of 190123 is about 57.5013736282.

It can be divided in two parts, 190 and 123, that added together give a palindrome (313).

The spelling of 190123 in words is "one hundred ninety thousand, one hundred twenty-three".