285042291 has 16 divisors (see below), whose sum is σ = 389975040. Its totient is φ = 185084480.

The previous prime is 285042287. The next prime is 285042341. The reversal of 285042291 is 192240582.

It is a cyclic number.

It is not a de Polignac number, because 285042291 - 2² = 285042287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285042211) 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 15 ways as a sum of consecutive naturals, for example, 89830 + ... + 92948.

It is an arithmetic number, because the mean of its divisors is an integer number (24373440).

Almost surely, 2^285042291 is an apocalyptic number.

285042291 is a deficient number, since it is larger than the sum of its proper divisors (104932749).

285042291 is a wasteful number, since it uses less digits than its factorization.

285042291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 285042291 is about 16883.1955209907. The cubic root of 285042291 is about 658.1169858486.

The spelling of 285042291 in words is "two hundred eighty-five million, forty-two thousand, two hundred ninety-one".