406143 has 6 divisors (see below), whose sum is σ = 586664. Its totient is φ = 270756.

The previous prime is 406123. The next prime is 406169. The reversal of 406143 is 341604.

It is not a de Polignac number, because 406143 - 2¹³ = 397951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406143.

It is not an unprimeable number, because it can be changed into a prime (406123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22555 + ... + 22572.

2⁴⁰⁶¹⁴³ is an apocalyptic number.

406143 is a deficient number, since it is larger than the sum of its proper divisors (180521).

406143 is a wasteful number, since it uses less digits than its factorization.

406143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45133 (or 45130 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 406143 is about 637.2934959656. The cubic root of 406143 is about 74.0558988402.

Adding to 406143 its reverse (341604), we get a palindrome (747747).

The spelling of 406143 in words is "four hundred six thousand, one hundred forty-three".