6857356242 has 32 divisors (see below), whose sum is σ = 14965220160. Its totient is φ = 2077470720.

The previous prime is 6857356241. The next prime is 6857356273. The reversal of 6857356242 is 2426537586.

It is a junction number, because it is equal to n+sod(n) for n = 6857356191 and 6857356200.

It is not an unprimeable number, because it can be changed into a prime (6857356241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319134 + ... + 339942.

It is an arithmetic number, because the mean of its divisors is an integer number (467663130).

Almost surely, 2^6857356242 is an apocalyptic number.

6857356242 is an abundant number, since it is smaller than the sum of its proper divisors (8107863918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6857356242 is a wasteful number, since it uses less digits than its factorization.

6857356242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25818.

The product of its digits is 2419200, while the sum is 48.

The square root of 6857356242 is about 82809.1555445411. The cubic root of 6857356242 is about 1899.8482096652.

The spelling of 6857356242 in words is "six billion, eight hundred fifty-seven million, three hundred fifty-six thousand, two hundred forty-two".