42855305 has 16 divisors (see below), whose sum is σ = 53754624. Its totient is φ = 32766720.

The previous prime is 42855269. The next prime is 42855311. The reversal of 42855305 is 50355824.

It is not a de Polignac number, because 42855305 - 2¹⁴ = 42838921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7985 + ... + 12225.

It is an arithmetic number, because the mean of its divisors is an integer number (3359664).

Almost surely, 2^42855305 is an apocalyptic number.

It is an amenable number.

42855305 is a deficient number, since it is larger than the sum of its proper divisors (10899319).

42855305 is a wasteful number, since it uses less digits than its factorization.

42855305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 42855305 is about 6546.3963369170. The cubic root of 42855305 is about 349.9463999552.

The spelling of 42855305 in words is "forty-two million, eight hundred fifty-five thousand, three hundred five".