390143 has 4 divisors (see below), whose sum is σ = 420168. Its totient is φ = 360120.

The previous prime is 390119. The next prime is 390151. The reversal of 390143 is 341093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341093 = 31 ⋅11003.

It is a cyclic number.

It is not a de Polignac number, because 390143 - 2¹² = 386047 is a prime.

It is a Duffinian number.

390143 is a modest number, since divided by 143 gives 39 as remainder.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 14993 + ... + 15018.

It is an arithmetic number, because the mean of its divisors is an integer number (105042).

2³⁹⁰¹⁴³ is an apocalyptic number.

390143 is a deficient number, since it is larger than the sum of its proper divisors (30025).

390143 is a wasteful number, since it uses less digits than its factorization.

390143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30024.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 390143 is about 624.6142809767. The cubic root of 390143 is about 73.0703643805.

The spelling of 390143 in words is "three hundred ninety thousand, one hundred forty-three".