42855530 has 16 divisors (see below), whose sum is σ = 77849640. Its totient is φ = 16984512.

The previous prime is 42855511. The next prime is 42855581. The reversal of 42855530 is 3555824.

It can be written as a sum of positive squares in 4 ways, for example, as 41512249 + 1343281 = 6443^2 + 1159^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18569 + ... + 20748.

Almost surely, 2^42855530 is an apocalyptic number.

42855530 is a deficient number, since it is larger than the sum of its proper divisors (34994110).

42855530 is a wasteful number, since it uses less digits than its factorization.

42855530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39433.

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

The square root of 42855530 is about 6546.4135219218. The cubic root of 42855530 is about 349.9470123866.

The spelling of 42855530 in words is "forty-two million, eight hundred fifty-five thousand, five hundred thirty".