442530531 has 12 divisors (see below), whose sum is σ = 640207152. Its totient is φ = 294560496.

The previous prime is 442530523. The next prime is 442530533. The reversal of 442530531 is 135035244.

It is not a de Polignac number, because 442530531 - 2³ = 442530523 is a prime.

It is a super-2 number, since 2×442530531² = 391666541734283922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442530495 and 442530504.

It is not an unprimeable number, because it can be changed into a prime (442530533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32176 + ... + 43821.

It is an arithmetic number, because the mean of its divisors is an integer number (53350596).

Almost surely, 2^442530531 is an apocalyptic number.

442530531 is a deficient number, since it is larger than the sum of its proper divisors (197676621).

442530531 is a wasteful number, since it uses less digits than its factorization.

442530531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76650 (or 76647 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 442530531 is about 21036.4096508886. The cubic root of 442530531 is about 762.0458101709.

Adding to 442530531 its reverse (135035244), we get a palindrome (577565775).

The spelling of 442530531 in words is "four hundred forty-two million, five hundred thirty thousand, five hundred thirty-one".