42618085 has 4 divisors (see below), whose sum is σ = 51141708. Its totient is φ = 34094464.

The previous prime is 42618073. The next prime is 42618091. The reversal of 42618085 is 58081624.

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 12609601 + 30008484 = 3551^2 + 5478^2 .

It is a cyclic number.

It is not a de Polignac number, because 42618085 - 2⁷ = 42617957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42618085.

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, 4261804 + ... + 4261813.

It is an arithmetic number, because the mean of its divisors is an integer number (12785427).

Almost surely, 2^42618085 is an apocalyptic number.

It is an amenable number.

42618085 is a deficient number, since it is larger than the sum of its proper divisors (8523623).

42618085 is an equidigital number, since it uses as much as digits as its factorization.

42618085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8523622.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 42618085 is about 6528.2528290501. The cubic root of 42618085 is about 349.2995105414.

The spelling of 42618085 in words is "forty-two million, six hundred eighteen thousand, eighty-five".