42085591 has 8 divisors (see below), whose sum is σ = 45126720. Its totient is φ = 39107328.

The previous prime is 42085579. The next prime is 42085601. The reversal of 42085591 is 19558024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42085591 - 2⁵ = 42085559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42085501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14326 + ... + 17011.

It is an arithmetic number, because the mean of its divisors is an integer number (5640840).

Almost surely, 2^42085591 is an apocalyptic number.

42085591 is a deficient number, since it is larger than the sum of its proper divisors (3041129).

42085591 is a wasteful number, since it uses less digits than its factorization.

42085591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31433.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 42085591 is about 6487.3408265637. The cubic root of 42085591 is about 347.8386285553.

The spelling of 42085591 in words is "forty-two million, eighty-five thousand, five hundred ninety-one".