42818217 has 8 divisors (see below), whose sum is σ = 61482624. Its totient is φ = 26349648.

The previous prime is 42818207. The next prime is 42818231. The reversal of 42818217 is 71281824.

It is a happy number.

42818217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42818217 - 2⁴ = 42818201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42818207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548913 + ... + 548990.

It is an arithmetic number, because the mean of its divisors is an integer number (7685328).

Almost surely, 2^42818217 is an apocalyptic number.

It is an amenable number.

42818217 is a deficient number, since it is larger than the sum of its proper divisors (18664407).

42818217 is a wasteful number, since it uses less digits than its factorization.

42818217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097919.

The product of its digits is 7168, while the sum is 33.

The square root of 42818217 is about 6543.5630202513. The cubic root of 42818217 is about 349.8454201742.

The spelling of 42818217 in words is "forty-two million, eight hundred eighteen thousand, two hundred seventeen".