42505005 has 8 divisors (see below), whose sum is σ = 68008032. Its totient is φ = 22669328.

The previous prime is 42505003. The next prime is 42505013. The reversal of 42505005 is 50050524.

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 42505005 - 2¹ = 42505003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42505003) 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 7 ways as a sum of consecutive naturals, for example, 1416819 + ... + 1416848.

It is an arithmetic number, because the mean of its divisors is an integer number (8501004).

Almost surely, 2^42505005 is an apocalyptic number.

It is an amenable number.

42505005 is a deficient number, since it is larger than the sum of its proper divisors (25503027).

42505005 is a wasteful number, since it uses less digits than its factorization.

42505005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833675.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 42505005 is about 6519.5862598788. The cubic root of 42505005 is about 348.9903008500.

Adding to 42505005 its reverse (50050524), we get a palindrome (92555529).

The spelling of 42505005 in words is "forty-two million, five hundred five thousand, five".