42215005 has 24 divisors (see below), whose sum is σ = 60676992. Its totient is φ = 27567936.

The previous prime is 42215003. The next prime is 42215023. The reversal of 42215005 is 50051224.

It is not a de Polignac number, because 42215005 - 2¹ = 42215003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42215003) 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 23 ways as a sum of consecutive naturals, for example, 184231 + ... + 184459.

It is an arithmetic number, because the mean of its divisors is an integer number (2528208).

Almost surely, 2^42215005 is an apocalyptic number.

It is an amenable number.

42215005 is a deficient number, since it is larger than the sum of its proper divisors (18461987).

42215005 is an equidigital number, since it uses as much as digits as its factorization.

42215005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 42215005 is about 6497.3075192729. The cubic root of 42215005 is about 348.1948005452.

Adding to 42215005 its reverse (50051224), we get a palindrome (92266229).

The spelling of 42215005 in words is "forty-two million, two hundred fifteen thousand, five".