42868285 has 4 divisors (see below), whose sum is σ = 51441948. Its totient is φ = 34294624.

The previous prime is 42868249. The next prime is 42868303. The reversal of 42868285 is 58286824.

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 20457529 + 22410756 = 4523^2 + 4734^2 .

It is a cyclic number.

It is not a de Polignac number, because 42868285 - 2¹⁵ = 42835517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286824 + ... + 4286833.

It is an arithmetic number, because the mean of its divisors is an integer number (12860487).

Almost surely, 2^42868285 is an apocalyptic number.

It is an amenable number.

42868285 is a deficient number, since it is larger than the sum of its proper divisors (8573663).

42868285 is an equidigital number, since it uses as much as digits as its factorization.

42868285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8573662.

The product of its digits is 245760, while the sum is 43.

The square root of 42868285 is about 6547.3876469933. The cubic root of 42868285 is about 349.9817269372.

The spelling of 42868285 in words is "forty-two million, eight hundred sixty-eight thousand, two hundred eighty-five".