42517417 has 4 divisors (see below), whose sum is σ = 42539860. Its totient is φ = 42494976.

The previous prime is 42517381. The next prime is 42517429. The reversal of 42517417 is 71471524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27625536 + 14891881 = 5256^2 + 3859^2 .

It is a cyclic number.

It is not a de Polignac number, because 42517417 - 2¹⁹ = 41993129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42517487) 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 3 ways as a sum of consecutive naturals, for example, 8088 + ... + 12265.

It is an arithmetic number, because the mean of its divisors is an integer number (10634965).

Almost surely, 2^42517417 is an apocalyptic number.

It is an amenable number.

42517417 is a deficient number, since it is larger than the sum of its proper divisors (22443).

42517417 is a wasteful number, since it uses less digits than its factorization.

42517417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22442.

The product of its digits is 7840, while the sum is 31.

The square root of 42517417 is about 6520.5380912928. The cubic root of 42517417 is about 349.0242674072.

The spelling of 42517417 in words is "forty-two million, five hundred seventeen thousand, four hundred seventeen".