142857128 has 16 divisors (see below), whose sum is σ = 269129760. Its totient is φ = 71089200.

The previous prime is 142857107. The next prime is 142857133. The reversal of 142857128 is 821758241.

It is a junction number, because it is equal to n+sod(n) for n = 142857091 and 142857100.

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, 40628 + ... + 44003.

It is an arithmetic number, because the mean of its divisors is an integer number (16820610).

Almost surely, 2^142857128 is an apocalyptic number.

It is an amenable number.

142857128 is a deficient number, since it is larger than the sum of its proper divisors (126272632).

142857128 is a wasteful number, since it uses less digits than its factorization.

142857128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84848 (or 84844 counting only the distinct ones).

The product of its digits is 35840, while the sum is 38.

The square root of 142857128 is about 11952.2854718250. The cubic root of 142857128 is about 522.7579404524.

The spelling of 142857128 in words is "one hundred forty-two million, eight hundred fifty-seven thousand, one hundred twenty-eight".