9856142 has 4 divisors (see below), whose sum is σ = 14784216. Its totient is φ = 4928070.

The previous prime is 9856139. The next prime is 9856151. The reversal of 9856142 is 2416589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2416589 = 7 ⋅345227.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2464034 + ... + 2464037.

It is an arithmetic number, because the mean of its divisors is an integer number (3696054).

Almost surely, 2^9856142 is an apocalyptic number.

9856142 is a deficient number, since it is larger than the sum of its proper divisors (4928074).

9856142 is a wasteful number, since it uses less digits than its factorization.

9856142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928073.

The product of its digits is 17280, while the sum is 35.

The square root of 9856142 is about 3139.4493147684. The cubic root of 9856142 is about 214.4053661082.

The spelling of 9856142 in words is "nine million, eight hundred fifty-six thousand, one hundred forty-two".