142408 has 16 divisors (see below), whose sum is σ = 305280. Its totient is φ = 61008.

The previous prime is 142403. The next prime is 142421. The reversal of 142408 is 804241.

It is not an unprimeable number, because it can be changed into a prime (142403) by changing a digit.

142408 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, 1216 + ... + 1327.

It is an arithmetic number, because the mean of its divisors is an integer number (19080).

2¹⁴²⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

142408 is an abundant number, since it is smaller than the sum of its proper divisors (162872).

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

142408 is a wasteful number, since it uses less digits than its factorization.

142408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556 (or 2552 counting only the distinct ones).

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

The square root of 142408 is about 377.3698451122. The cubic root of 142408 is about 52.2209533082.

Adding to 142408 its reverse (804241), we get a palindrome (946649).

The spelling of 142408 in words is "one hundred forty-two thousand, four hundred eight".