42065013 has 4 divisors (see below), whose sum is σ = 56086688. Its totient is φ = 28043340.

The previous prime is 42065011. The next prime is 42065027. The reversal of 42065013 is 31056024.

It is a happy number.

42065013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 42065013 - 2¹ = 42065011 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 (42065011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7010833 + ... + 7010838.

It is an arithmetic number, because the mean of its divisors is an integer number (14021672).

Almost surely, 2^42065013 is an apocalyptic number.

It is an amenable number.

42065013 is a deficient number, since it is larger than the sum of its proper divisors (14021675).

42065013 is a wasteful number, since it uses less digits than its factorization.

42065013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14021674.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 42065013 is about 6485.7546207053. The cubic root of 42065013 is about 347.7819267240.

The spelling of 42065013 in words is "forty-two million, sixty-five thousand, thirteen".