42424505 has 4 divisors (see below), whose sum is σ = 50909412. Its totient is φ = 33939600.

The previous prime is 42424483. The next prime is 42424517. The reversal of 42424505 is 50542424.

42424505 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 27081616 + 15342889 = 5204^2 + 3917^2 .

It is not a de Polignac number, because 42424505 - 2¹⁰ = 42423481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 4242446 + ... + 4242455.

It is an arithmetic number, because the mean of its divisors is an integer number (12727353).

Almost surely, 2^42424505 is an apocalyptic number.

It is an amenable number.

42424505 is a deficient number, since it is larger than the sum of its proper divisors (8484907).

42424505 is an equidigital number, since it uses as much as digits as its factorization.

42424505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484906.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 42424505 is about 6513.4096293723. The cubic root of 42424505 is about 348.7698446675.

Adding to 42424505 its reverse (50542424), we get a palindrome (92966929).

The spelling of 42424505 in words is "forty-two million, four hundred twenty-four thousand, five hundred five".