42130013 has 4 divisors (see below), whose sum is σ = 43268700. Its totient is φ = 40991328.

The previous prime is 42130009. The next prime is 42130021. The reversal of 42130013 is 31003124.

42130013 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.

It can be written as a sum of positive squares in 2 ways, for example, as 25180324 + 16949689 = 5018^2 + 4117^2 .

It is a cyclic number.

It is not a de Polignac number, because 42130013 - 2² = 42130009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42130013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42130213) 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, 569288 + ... + 569361.

It is an arithmetic number, because the mean of its divisors is an integer number (10817175).

Almost surely, 2^42130013 is an apocalyptic number.

It is an amenable number.

42130013 is a deficient number, since it is larger than the sum of its proper divisors (1138687).

42130013 is a wasteful number, since it uses less digits than its factorization.

42130013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138686.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 42130013 is about 6490.7636684754. The cubic root of 42130013 is about 347.9609685603.

Adding to 42130013 its reverse (31003124), we get a palindrome (73133137).

The spelling of 42130013 in words is "forty-two million, one hundred thirty thousand, thirteen".