42085313 has 4 divisors (see below), whose sum is σ = 42713520. Its totient is φ = 41457108.

The previous prime is 42085301. The next prime is 42085327. The reversal of 42085313 is 31358024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42085313 - 2¹⁸ = 41823169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42085363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314003 + ... + 314136.

It is an arithmetic number, because the mean of its divisors is an integer number (10678380).

Almost surely, 2^42085313 is an apocalyptic number.

It is an amenable number.

42085313 is a deficient number, since it is larger than the sum of its proper divisors (628207).

42085313 is an equidigital number, since it uses as much as digits as its factorization.

42085313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628206.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42085313 is about 6487.3194001837. The cubic root of 42085313 is about 347.8378626609.

The spelling of 42085313 in words is "forty-two million, eighty-five thousand, three hundred thirteen".