42002217 has 12 divisors (see below), whose sum is σ = 63863280. Its totient is φ = 26527608.

The previous prime is 42002201. The next prime is 42002227. The reversal of 42002217 is 71220024.

It is not a de Polignac number, because 42002217 - 2⁴ = 42002201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42002217.

It is not an unprimeable number, because it can be changed into a prime (42002227) 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 11 ways as a sum of consecutive naturals, for example, 122643 + ... + 122984.

It is an arithmetic number, because the mean of its divisors is an integer number (5321940).

Almost surely, 2^42002217 is an apocalyptic number.

It is an amenable number.

42002217 is a deficient number, since it is larger than the sum of its proper divisors (21861063).

42002217 is a wasteful number, since it uses less digits than its factorization.

42002217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245652 (or 245649 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 42002217 is about 6480.9117414142. The cubic root of 42002217 is about 347.6087805327.

The spelling of 42002217 in words is "forty-two million, two thousand, two hundred seventeen".