442111513 has 4 divisors (see below), whose sum is σ = 465380560. Its totient is φ = 418842468.

The previous prime is 442111499. The next prime is 442111567. The reversal of 442111513 is 315111244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442111513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442111573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11634495 + ... + 11634532.

It is an arithmetic number, because the mean of its divisors is an integer number (116345140).

Almost surely, 2^442111513 is an apocalyptic number.

It is an amenable number.

442111513 is a deficient number, since it is larger than the sum of its proper divisors (23269047).

442111513 is a wasteful number, since it uses less digits than its factorization.

442111513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23269046.

The product of its digits is 480, while the sum is 22.

The square root of 442111513 is about 21026.4479406294. The cubic root of 442111513 is about 761.8052152863.

Adding to 442111513 its reverse (315111244), we get a palindrome (757222757).

The spelling of 442111513 in words is "four hundred forty-two million, one hundred eleven thousand, five hundred thirteen".