406842 has 8 divisors (see below), whose sum is σ = 813696. Its totient is φ = 135612.

The previous prime is 406837. The next prime is 406859. The reversal of 406842 is 248604.

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

406842 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33898 + ... + 33909.

It is an arithmetic number, because the mean of its divisors is an integer number (101712).

2⁴⁰⁶⁸⁴² is an apocalyptic number.

406842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406842 is a wasteful number, since it uses less digits than its factorization.

406842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67812.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 406842 is about 637.8416731447. The cubic root of 406842 is about 74.0983595864.

The spelling of 406842 in words is "four hundred six thousand, eight hundred forty-two".