857012542 has 8 divisors (see below), whose sum is σ = 1294902576. Its totient is φ = 425378352.

The previous prime is 857012539. The next prime is 857012549. The reversal of 857012542 is 245210758.

It is a happy number.

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 = 857012498 and 857012507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857012549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1563618 + ... + 1564165.

It is an arithmetic number, because the mean of its divisors is an integer number (161862822).

Almost surely, 2^857012542 is an apocalyptic number.

857012542 is a deficient number, since it is larger than the sum of its proper divisors (437890034).

857012542 is a wasteful number, since it uses less digits than its factorization.

857012542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127922.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 857012542 is about 29274.7765491045. The cubic root of 857012542 is about 949.8661092932.

It can be divided in two parts, 8570 and 12542, that added together give a palindrome (21112).

The spelling of 857012542 in words is "eight hundred fifty-seven million, twelve thousand, five hundred forty-two".