442502013 has 4 divisors (see below), whose sum is σ = 590002688. Its totient is φ = 295001340.

The previous prime is 442502009. The next prime is 442502017. The reversal of 442502013 is 310205244.

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 an interprime number because it is at equal distance from previous prime (442502009) and next prime (442502017).

It is not a de Polignac number, because 442502013 - 2² = 442502009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442502017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73750333 + ... + 73750338.

It is an arithmetic number, because the mean of its divisors is an integer number (147500672).

Almost surely, 2^442502013 is an apocalyptic number.

It is an amenable number.

442502013 is a deficient number, since it is larger than the sum of its proper divisors (147500675).

442502013 is a wasteful number, since it uses less digits than its factorization.

442502013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147500674.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 442502013 is about 21035.7318151758. The cubic root of 442502013 is about 762.0294403103.

Adding to 442502013 its reverse (310205244), we get a palindrome (752707257).

The spelling of 442502013 in words is "four hundred forty-two million, five hundred two thousand, thirteen".