42443045 has 4 divisors (see below), whose sum is σ = 50931660. Its totient is φ = 33954432.

The previous prime is 42443039. The next prime is 42443069. The reversal of 42443045 is 54034424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29833444 + 12609601 = 5462^2 + 3551^2 .

It is a cyclic number.

It is not a de Polignac number, because 42443045 - 2¹⁴ = 42426661 is a prime.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4244300 + ... + 4244309.

It is an arithmetic number, because the mean of its divisors is an integer number (12732915).

Almost surely, 2^42443045 is an apocalyptic number.

It is an amenable number.

42443045 is a deficient number, since it is larger than the sum of its proper divisors (8488615).

42443045 is an equidigital number, since it uses as much as digits as its factorization.

42443045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8488614.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 42443045 is about 6514.8326916353. The cubic root of 42443045 is about 348.8206427555.

Adding to 42443045 its reverse (54034424), we get a palindrome (96477469).

The spelling of 42443045 in words is "forty-two million, four hundred forty-three thousand, forty-five".