857183242 has 16 divisors (see below), whose sum is σ = 1316874240. Its totient is φ = 418243392.

The previous prime is 857183221. The next prime is 857183267. The reversal of 857183242 is 242381758.

It is a happy number.

It is a super-2 number, since 2×857183242² = 1469526220731261128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 857183195 and 857183204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106098 + ... + 113890.

It is an arithmetic number, because the mean of its divisors is an integer number (82304640).

Almost surely, 2^857183242 is an apocalyptic number.

857183242 is a deficient number, since it is larger than the sum of its proper divisors (459690998).

857183242 is a wasteful number, since it uses less digits than its factorization.

857183242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9117.

The product of its digits is 107520, while the sum is 40.

The square root of 857183242 is about 29277.6918830703. The cubic root of 857183242 is about 949.9291699731.

The spelling of 857183242 in words is "eight hundred fifty-seven million, one hundred eighty-three thousand, two hundred forty-two".