142917808 has 20 divisors (see below), whose sum is σ = 302076648. Its totient is φ = 64962560.

The previous prime is 142917769. The next prime is 142917811. The reversal of 142917808 is 808719241.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405841 + ... + 406192.

Almost surely, 2^142917808 is an apocalyptic number.

It is an amenable number.

142917808 is an abundant number, since it is smaller than the sum of its proper divisors (159158840).

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

142917808 is a wasteful number, since it uses less digits than its factorization.

142917808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812052 (or 812046 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 142917808 is about 11954.8236289792. The cubic root of 142917808 is about 522.8319455372.

The spelling of 142917808 in words is "one hundred forty-two million, nine hundred seventeen thousand, eight hundred eight".