42615013 has 4 divisors (see below), whose sum is σ = 48702880. Its totient is φ = 36527148.

The previous prime is 42615011. The next prime is 42615017. The reversal of 42615013 is 31051624.

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 42615013 - 2¹ = 42615011 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 (42615011) 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, 3043923 + ... + 3043936.

It is an arithmetic number, because the mean of its divisors is an integer number (12175720).

Almost surely, 2^42615013 is an apocalyptic number.

It is an amenable number.

42615013 is a deficient number, since it is larger than the sum of its proper divisors (6087867).

42615013 is an equidigital number, since it uses as much as digits as its factorization.

42615013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087866.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 42615013 is about 6528.0175398049. The cubic root of 42615013 is about 349.2911175952.

Adding to 42615013 its reverse (31051624), we get a palindrome (73666637).

The spelling of 42615013 in words is "forty-two million, six hundred fifteen thousand, thirteen".