442042513 has 8 divisors (see below), whose sum is σ = 482803776. Its totient is φ = 401377200.

The previous prime is 442042499. The next prime is 442042519. The reversal of 442042513 is 315240244.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442042513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442042519) 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 7 ways as a sum of consecutive naturals, for example, 14173 + ... + 32938.

It is an arithmetic number, because the mean of its divisors is an integer number (60350472).

Almost surely, 2^442042513 is an apocalyptic number.

It is an amenable number.

442042513 is a deficient number, since it is larger than the sum of its proper divisors (40761263).

442042513 is a wasteful number, since it uses less digits than its factorization.

442042513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47975.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 442042513 is about 21024.8070859164. The cubic root of 442042513 is about 761.7655817752.

Adding to 442042513 its reverse (315240244), we get a palindrome (757282757).

The spelling of 442042513 in words is "four hundred forty-two million, forty-two thousand, five hundred thirteen".