16857142 has 8 divisors (see below), whose sum is σ = 26616600. Its totient is φ = 7984944.

The previous prime is 16857121. The next prime is 16857157. The reversal of 16857142 is 24175861.

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

It is a junction number, because it is equal to n+sod(n) for n = 16857098 and 16857107.

It is a congruent 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, 221767 + ... + 221842.

It is an arithmetic number, because the mean of its divisors is an integer number (3327075).

Almost surely, 2^16857142 is an apocalyptic number.

16857142 is a deficient number, since it is larger than the sum of its proper divisors (9759458).

16857142 is a wasteful number, since it uses less digits than its factorization.

16857142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443630.

The product of its digits is 13440, while the sum is 34.

The square root of 16857142 is about 4105.7449993881. The cubic root of 16857142 is about 256.4058808055.

The spelling of 16857142 in words is "sixteen million, eight hundred fifty-seven thousand, one hundred forty-two".