42320217 has 8 divisors (see below), whose sum is σ = 57200224. Its totient is φ = 27826848.

The previous prime is 42320203. The next prime is 42320237. The reversal of 42320217 is 71202324.

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

It is not a de Polignac number, because 42320217 - 2¹¹ = 42318169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42320193 and 42320202.

It is not an unprimeable number, because it can be changed into a prime (42320237) 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, 96403 + ... + 96840.

It is an arithmetic number, because the mean of its divisors is an integer number (7150028).

Almost surely, 2^42320217 is an apocalyptic number.

It is an amenable number.

42320217 is a deficient number, since it is larger than the sum of its proper divisors (14880007).

42320217 is a wasteful number, since it uses less digits than its factorization.

42320217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193319.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 42320217 is about 6505.3990653918. The cubic root of 42320217 is about 348.4838279422.

The spelling of 42320217 in words is "forty-two million, three hundred twenty thousand, two hundred seventeen".