142217908 has 24 divisors (see below), whose sum is σ = 287373632. Its totient is φ = 60321024.

The previous prime is 142217897. The next prime is 142217909. The reversal of 142217908 is 809712241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142217909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23466 + ... + 28897.

Almost surely, 2^142217908 is an apocalyptic number.

It is an amenable number.

142217908 is an abundant number, since it is smaller than the sum of its proper divisors (145155724).

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

142217908 is a wasteful number, since it uses less digits than its factorization.

142217908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52471 (or 52469 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 142217908 is about 11925.5149993617. The cubic root of 142217908 is about 521.9770740997.

The spelling of 142217908 in words is "one hundred forty-two million, two hundred seventeen thousand, nine hundred eight".