142866857 has 8 divisors (see below), whose sum is σ = 163444800. Its totient is φ = 122331024.

The previous prime is 142866851. The next prime is 142866859. The reversal of 142866857 is 758668241.

142866857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142866857 - 2¹⁸ = 142604713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142866851) 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, 2882 + ... + 17147.

It is an arithmetic number, because the mean of its divisors is an integer number (20430600).

Almost surely, 2^142866857 is an apocalyptic number.

It is an amenable number.

142866857 is a deficient number, since it is larger than the sum of its proper divisors (20577943).

142866857 is a wasteful number, since it uses less digits than its factorization.

142866857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21055.

The product of its digits is 645120, while the sum is 47.

The square root of 142866857 is about 11952.6924581870. The cubic root of 142866857 is about 522.7698073123.

The spelling of 142866857 in words is "one hundred forty-two million, eight hundred sixty-six thousand, eight hundred fifty-seven".