442517 has 2 divisors, whose sum is σ = 442518. Its totient is φ = 442516.

The previous prime is 442501. The next prime is 442531. The reversal of 442517 is 715244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421201 + 21316 = 649^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 442517 - 2⁴ = 442501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442492 and 442501.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442517.

It is not a weakly prime, because it can be changed into another prime (442537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221258 + 221259.

It is an arithmetic number, because the mean of its divisors is an integer number (221259).

2⁴⁴²⁵¹⁷ is an apocalyptic number.

It is an amenable number.

442517 is a deficient number, since it is larger than the sum of its proper divisors (1).

442517 is an equidigital number, since it uses as much as digits as its factorization.

442517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 23.

The square root of 442517 is about 665.2195126423. The cubic root of 442517 is about 76.2038043214.

It can be divided in two parts, 442 and 517, that added together give a palindrome (959).

The spelling of 442517 in words is "four hundred forty-two thousand, five hundred seventeen".