42443530 has 32 divisors (see below), whose sum is σ = 83203200. Its totient is φ = 15527232.

The previous prime is 42443503. The next prime is 42443561. The reversal of 42443530 is 3534424.

It is a junction number, because it is equal to n+sod(n) for n = 42443495 and 42443504.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1659 + ... + 9361.

It is an arithmetic number, because the mean of its divisors is an integer number (2600100).

Almost surely, 2^42443530 is an apocalyptic number.

42443530 is a deficient number, since it is larger than the sum of its proper divisors (40759670).

42443530 is a wasteful number, since it uses less digits than its factorization.

42443530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7758.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 42443530 is about 6514.8699142807. The cubic root of 42443530 is about 348.8219714174.

Adding to 42443530 its reverse (3534424), we get a palindrome (45977954).

The spelling of 42443530 in words is "forty-two million, four hundred forty-three thousand, five hundred thirty".