4202085857 has 4 divisors (see below), whose sum is σ = 4449267396. Its totient is φ = 3954904320.

The previous prime is 4202085841. The next prime is 4202085871. The reversal of 4202085857 is 7585802024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1978114576 + 2223971281 = 44476^2 + 47159^2 .

It is a cyclic number.

It is not a de Polignac number, because 4202085857 - 2⁴ = 4202085841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4202085887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123590744 + ... + 123590777.

It is an arithmetic number, because the mean of its divisors is an integer number (1112316849).

Almost surely, 2^4202085857 is an apocalyptic number.

It is an amenable number.

4202085857 is a deficient number, since it is larger than the sum of its proper divisors (247181539).

4202085857 is a wasteful number, since it uses less digits than its factorization.

4202085857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247181538.

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 4202085857 is about 64823.4977226623. The cubic root of 4202085857 is about 1613.6956955856.

The spelling of 4202085857 in words is "four billion, two hundred two million, eighty-five thousand, eight hundred fifty-seven".