408942 has 16 divisors (see below), whose sum is σ = 908880. Its totient is φ = 136296.

The previous prime is 408923. The next prime is 408943. The reversal of 408942 is 249804.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 408942.

It is not an unprimeable number, because it can be changed into a prime (408943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733 + ... + 3840.

It is an arithmetic number, because the mean of its divisors is an integer number (56805).

2⁴⁰⁸⁹⁴² is an apocalyptic number.

408942 is an abundant number, since it is smaller than the sum of its proper divisors (499938).

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

408942 is a wasteful number, since it uses less digits than its factorization.

408942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7584 (or 7578 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 408942 is about 639.4857308807. The cubic root of 408942 is about 74.2256322445.

The spelling of 408942 in words is "four hundred eight thousand, nine hundred forty-two".