406042 has 32 divisors (see below), whose sum is σ = 790272. Its totient is φ = 152064.

The previous prime is 406037. The next prime is 406067. The reversal of 406042 is 240604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4138 + ... + 4234.

It is an arithmetic number, because the mean of its divisors is an integer number (24696).

2⁴⁰⁶⁰⁴² is an apocalyptic number.

406042 is a deficient number, since it is larger than the sum of its proper divisors (384230).

406042 is a wasteful number, since it uses less digits than its factorization.

406042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 406042 is about 637.2142496837. The cubic root of 406042 is about 74.0497595691.

Adding to 406042 its reverse (240604), we get a palindrome (646646).

The spelling of 406042 in words is "four hundred six thousand, forty-two".