42830217 has 6 divisors (see below), whose sum is σ = 61865882. Its totient is φ = 28553472.

The previous prime is 42830213. The next prime is 42830233. The reversal of 42830217 is 71203824.

It can be written as a sum of positive squares in only one way, i.e., 41332041 + 1498176 = 6429^2 + 1224^2 .

It is not a de Polignac number, because 42830217 - 2² = 42830213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42830213) 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 5 ways as a sum of consecutive naturals, for example, 2379448 + ... + 2379465.

Almost surely, 2^42830217 is an apocalyptic number.

It is an amenable number.

42830217 is a deficient number, since it is larger than the sum of its proper divisors (19035665).

42830217 is a wasteful number, since it uses less digits than its factorization.

42830217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4758919 (or 4758916 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 42830217 is about 6544.4798876611. The cubic root of 42830217 is about 349.8780990448.

The spelling of 42830217 in words is "forty-two million, eight hundred thirty thousand, two hundred seventeen".