142009808 has 20 divisors (see below), whose sum is σ = 277818528. Its totient is φ = 70314720.

The previous prime is 142009807. The next prime is 142009831. The reversal of 142009808 is 808900241.

It is a happy number.

142009808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142009807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41438 + ... + 44733.

Almost surely, 2^142009808 is an apocalyptic number.

It is an amenable number.

142009808 is a deficient number, since it is larger than the sum of its proper divisors (135808720).

142009808 is a wasteful number, since it uses less digits than its factorization.

142009808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86282 (or 86276 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 142009808 is about 11916.7868152451. The cubic root of 142009808 is about 521.7223559357.

The spelling of 142009808 in words is "one hundred forty-two million, nine thousand, eight hundred eight".