42663073 has 4 divisors (see below), whose sum is σ = 42708160. Its totient is φ = 42617988.

The previous prime is 42663067. The next prime is 42663133. The reversal of 42663073 is 37036624.

42663073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 42663073 - 2¹³ = 42654881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42663053) 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, 21093 + ... + 23026.

It is an arithmetic number, because the mean of its divisors is an integer number (10677040).

Almost surely, 2^42663073 is an apocalyptic number.

It is an amenable number.

42663073 is a deficient number, since it is larger than the sum of its proper divisors (45087).

42663073 is an equidigital number, since it uses as much as digits as its factorization.

42663073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45086.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 42663073 is about 6531.6975588280. The cubic root of 42663073 is about 349.4223751285.

Adding to 42663073 its reverse (37036624), we get a palindrome (79699697).

The spelling of 42663073 in words is "forty-two million, six hundred sixty-three thousand, seventy-three".