390123 has 8 divisors (see below), whose sum is σ = 578000. Its totient is φ = 260064.

The previous prime is 390119. The next prime is 390151. The reversal of 390123 is 321093.

It is not a de Polignac number, because 390123 - 2² = 390119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390096 and 390105.

It is not an unprimeable number, because it can be changed into a prime (390113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7198 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (72250).

2³⁹⁰¹²³ is an apocalyptic number.

390123 is a deficient number, since it is larger than the sum of its proper divisors (187877).

390123 is a wasteful number, since it uses less digits than its factorization.

390123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14458 (or 14452 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 390123 is about 624.5982708910. The cubic root of 390123 is about 73.0691157509.

The spelling of 390123 in words is "three hundred ninety thousand, one hundred twenty-three".