406142 has 8 divisors (see below), whose sum is σ = 664632. Its totient is φ = 184600.

The previous prime is 406123. The next prime is 406169. The reversal of 406142 is 241604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 406142.

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 406142.

It is an unprimeable number.

406142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 9209 + ... + 9252.

It is an arithmetic number, because the mean of its divisors is an integer number (83079).

2⁴⁰⁶¹⁴² is an apocalyptic number.

406142 is a deficient number, since it is larger than the sum of its proper divisors (258490).

406142 is a wasteful number, since it uses less digits than its factorization.

406142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18474.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 406142 is about 637.2927113972. The cubic root of 406142 is about 74.0558380603.

Adding to 406142 its reverse (241604), we get a palindrome (647746).

The spelling of 406142 in words is "four hundred six thousand, one hundred forty-two".