42861285 has 16 divisors (see below), whose sum is σ = 76198080. Its totient is φ = 22859280.

The previous prime is 42861271. The next prime is 42861319. The reversal of 42861285 is 58216824.

It is not a de Polignac number, because 42861285 - 2¹¹ = 42859237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158611 + ... + 158880.

It is an arithmetic number, because the mean of its divisors is an integer number (4762380).

Almost surely, 2^42861285 is an apocalyptic number.

42861285 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42861285 is a deficient number, since it is larger than the sum of its proper divisors (33336795).

42861285 is a wasteful number, since it uses less digits than its factorization.

42861285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317505 (or 317499 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 42861285 is about 6546.8530608224. The cubic root of 42861285 is about 349.9626762921.

The spelling of 42861285 in words is "forty-two million, eight hundred sixty-one thousand, two hundred eighty-five".