857442201 has 32 divisors (see below), whose sum is σ = 1428615168. Its totient is φ = 444407040.

The previous prime is 857442193. The next prime is 857442233. The reversal of 857442201 is 102244758.

It is not a de Polignac number, because 857442201 - 2³ = 857442193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (857442301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102945 + ... + 110961.

It is an arithmetic number, because the mean of its divisors is an integer number (44644224).

Almost surely, 2^857442201 is an apocalyptic number.

It is an amenable number.

857442201 is a deficient number, since it is larger than the sum of its proper divisors (571172967).

857442201 is a wasteful number, since it uses less digits than its factorization.

857442201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8501.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 857442201 is about 29282.1140117991. The cubic root of 857442201 is about 950.0248196655.

Adding to 857442201 its reverse (102244758), we get a palindrome (959686959).

The spelling of 857442201 in words is "eight hundred fifty-seven million, four hundred forty-two thousand, two hundred one".