42906085 has 16 divisors (see below), whose sum is σ = 54892800. Its totient is φ = 32101056.

The previous prime is 42906067. The next prime is 42906089. The reversal of 42906085 is 58060924.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42906085 - 2⁵ = 42906053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42906085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42906089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4647 + ... + 10363.

It is an arithmetic number, because the mean of its divisors is an integer number (3430800).

Almost surely, 2^42906085 is an apocalyptic number.

It is an amenable number.

42906085 is a deficient number, since it is larger than the sum of its proper divisors (11986715).

42906085 is a wasteful number, since it uses less digits than its factorization.

42906085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 42906085 is about 6550.2736584054. The cubic root of 42906085 is about 350.0845646004.

The spelling of 42906085 in words is "forty-two million, nine hundred six thousand, eighty-five".