42220017 has 18 divisors (see below), whose sum is σ = 70941858. Its totient is φ = 24125472.

The previous prime is 42219979. The next prime is 42220081. The reversal of 42220017 is 71002224.

It can be written as a sum of positive squares in only one way, i.e., 42107121 + 112896 = 6489^2 + 336^2 .

It is not a de Polignac number, because 42220017 - 2⁸ = 42219761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42220517) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 47428 + ... + 48309.

Almost surely, 2^42220017 is an apocalyptic number.

It is an amenable number.

42220017 is a deficient number, since it is larger than the sum of its proper divisors (28721841).

42220017 is a wasteful number, since it uses less digits than its factorization.

42220017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95757 (or 95747 counting only the distinct ones).

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

The square root of 42220017 is about 6497.6932060540. The cubic root of 42220017 is about 348.2085798738.

The spelling of 42220017 in words is "forty-two million, two hundred twenty thousand, seventeen".