408542 has 8 divisors (see below), whose sum is σ = 615600. Its totient is φ = 203344.

The previous prime is 408539. The next prime is 408553. The reversal of 408542 is 245804.

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

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 408542.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434 + ... + 1002.

It is an arithmetic number, because the mean of its divisors is an integer number (76950).

2⁴⁰⁸⁵⁴² is an apocalyptic number.

408542 is a deficient number, since it is larger than the sum of its proper divisors (207058).

408542 is a wasteful number, since it uses less digits than its factorization.

408542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 408542 is about 639.1729030552. The cubic root of 408542 is about 74.2014234826.

The spelling of 408542 in words is "four hundred eight thousand, five hundred forty-two".