42424513 has 4 divisors (see below), whose sum is σ = 42678720. Its totient is φ = 42170308.

The previous prime is 42424483. The next prime is 42424517. The reversal of 42424513 is 31542424.

It is a happy number.

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 42424513 - 2⁹ = 42424001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42424517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126853 + ... + 127186.

It is an arithmetic number, because the mean of its divisors is an integer number (10669680).

Almost surely, 2^42424513 is an apocalyptic number.

It is an amenable number.

42424513 is a deficient number, since it is larger than the sum of its proper divisors (254207).

42424513 is a wasteful number, since it uses less digits than its factorization.

42424513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254206.

The product of its digits is 3840, while the sum is 25.

The square root of 42424513 is about 6513.4102434900. The cubic root of 42424513 is about 348.7698665901.

Adding to 42424513 its reverse (31542424), we get a palindrome (73966937).

The spelling of 42424513 in words is "forty-two million, four hundred twenty-four thousand, five hundred thirteen".