42216005 has 16 divisors (see below), whose sum is σ = 57429120. Its totient is φ = 29533248.

The previous prime is 42215989. The next prime is 42216007. The reversal of 42216005 is 50061224.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42216005 - 2⁴ = 42215989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42216007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15857 + ... + 18326.

It is an arithmetic number, because the mean of its divisors is an integer number (3589320).

Almost surely, 2^42216005 is an apocalyptic number.

It is an amenable number.

42216005 is a deficient number, since it is larger than the sum of its proper divisors (15213115).

42216005 is a wasteful number, since it uses less digits than its factorization.

42216005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34220.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 42216005 is about 6497.3844737710. The cubic root of 42216005 is about 348.1975498998.

Adding to 42216005 its reverse (50061224), we get a palindrome (92277229).

The spelling of 42216005 in words is "forty-two million, two hundred sixteen thousand, five".