490123 has 4 divisors (see below), whose sum is σ = 495720. Its totient is φ = 484528.

The previous prime is 490121. The next prime is 490151. The reversal of 490123 is 321094.

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 490123 - 2¹ = 490121 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 490123.

It is not an unprimeable number, because it can be changed into a prime (490121) 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, 2665 + ... + 2842.

It is an arithmetic number, because the mean of its divisors is an integer number (123930).

2⁴⁹⁰¹²³ is an apocalyptic number.

490123 is a deficient number, since it is larger than the sum of its proper divisors (5597).

490123 is an equidigital number, since it uses as much as digits as its factorization.

490123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5596.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 490123 is about 700.0878516301. The cubic root of 490123 is about 78.8439476739.

The spelling of 490123 in words is "four hundred ninety thousand, one hundred twenty-three".