408142 has 8 divisors (see below), whose sum is σ = 699696. Its totient is φ = 174912.

The previous prime is 408137. The next prime is 408169. The reversal of 408142 is 241804.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

408142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14563 + ... + 14590.

It is an arithmetic number, because the mean of its divisors is an integer number (87462).

2⁴⁰⁸¹⁴² is an apocalyptic number.

408142 is a deficient number, since it is larger than the sum of its proper divisors (291554).

408142 is a wasteful number, since it uses less digits than its factorization.

408142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29162.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 408142 is about 638.8599220486. The cubic root of 408142 is about 74.1771989139.

Adding to 408142 its reverse (241804), we get a palindrome (649946).

The spelling of 408142 in words is "four hundred eight thousand, one hundred forty-two".