42252005 has 8 divisors (see below), whose sum is σ = 50746392. Its totient is φ = 33772288.

The previous prime is 42251999. The next prime is 42252019. The reversal of 42252005 is 50025224.

42252005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19651489 + 22600516 = 4433^2 + 4754^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42252005 - 2⁶ = 42251941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 4217 + ... + 10113.

It is an arithmetic number, because the mean of its divisors is an integer number (6343299).

Almost surely, 2^42252005 is an apocalyptic number.

It is an amenable number.

42252005 is a deficient number, since it is larger than the sum of its proper divisors (8494387).

42252005 is a wasteful number, since it uses less digits than its factorization.

42252005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 42252005 is about 6500.1542289395. The cubic root of 42252005 is about 348.2964977621.

Adding to 42252005 its reverse (50025224), we get a palindrome (92277229).

The spelling of 42252005 in words is "forty-two million, two hundred fifty-two thousand, five".