42903643 has 4 divisors (see below), whose sum is σ = 42922000. Its totient is φ = 42885288.

The previous prime is 42903629. The next prime is 42903647. The reversal of 42903643 is 34630924.

42903643 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.

It is a cyclic number.

It is not a de Polignac number, because 42903643 - 2⁹ = 42903131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42903647) 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, 5055 + ... + 10552.

It is an arithmetic number, because the mean of its divisors is an integer number (10730500).

Almost surely, 2^42903643 is an apocalyptic number.

42903643 is a deficient number, since it is larger than the sum of its proper divisors (18357).

42903643 is a wasteful number, since it uses less digits than its factorization.

42903643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18356.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 42903643 is about 6550.0872513273. The cubic root of 42903643 is about 350.0779227863.

The spelling of 42903643 in words is "forty-two million, nine hundred three thousand, six hundred forty-three".