42217005 has 16 divisors (see below), whose sum is σ = 67636800. Its totient is φ = 22485888.

The previous prime is 42216989. The next prime is 42217039. The reversal of 42217005 is 50071224.

It is not a de Polignac number, because 42217005 - 2⁴ = 42216989 is a prime.

It is a super-2 number, since 2×42217005² = 3564551022340050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14394 + ... + 17076.

It is an arithmetic number, because the mean of its divisors is an integer number (4227300).

Almost surely, 2^42217005 is an apocalyptic number.

It is an amenable number.

42217005 is a deficient number, since it is larger than the sum of its proper divisors (25419795).

42217005 is a wasteful number, since it uses less digits than its factorization.

42217005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 42217005 is about 6497.4614273576. The cubic root of 42217005 is about 348.2002992109.

Adding to 42217005 its reverse (50071224), we get a palindrome (92288229).

The spelling of 42217005 in words is "forty-two million, two hundred seventeen thousand, five".