442515 has 8 divisors (see below), whose sum is σ = 708048. Its totient is φ = 236000.

The previous prime is 442501. The next prime is 442517. The reversal of 442515 is 515244.

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

It is not a de Polignac number, because 442515 - 2⁴ = 442499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442491 and 442500.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442515.

It is not an unprimeable number, because it can be changed into a prime (442517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14736 + ... + 14765.

It is an arithmetic number, because the mean of its divisors is an integer number (88506).

2⁴⁴²⁵¹⁵ is an apocalyptic number.

442515 is a deficient number, since it is larger than the sum of its proper divisors (265533).

442515 is a wasteful number, since it uses less digits than its factorization.

442515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29509.

The product of its digits is 800, while the sum is 21.

The square root of 442515 is about 665.2180093774. The cubic root of 442515 is about 76.2036895176.

Adding to 442515 its reverse (515244), we get a palindrome (957759).

The spelling of 442515 in words is "four hundred forty-two thousand, five hundred fifteen".