42436013 has 4 divisors (see below), whose sum is σ = 42453600. Its totient is φ = 42418428.

The previous prime is 42436007. The next prime is 42436021. The reversal of 42436013 is 31063424.

It is a happy number.

42436013 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 a cyclic number.

It is not a de Polignac number, because 42436013 - 2¹⁰ = 42434989 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 42436013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42436033) 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, 4463 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (10613400).

Almost surely, 2^42436013 is an apocalyptic number.

It is an amenable number.

42436013 is a deficient number, since it is larger than the sum of its proper divisors (17587).

42436013 is a wasteful number, since it uses less digits than its factorization.

42436013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17586.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 42436013 is about 6514.2929777528. The cubic root of 42436013 is about 348.8013773907.

Adding to 42436013 its reverse (31063424), we get a palindrome (73499437).

The spelling of 42436013 in words is "forty-two million, four hundred thirty-six thousand, thirteen".