42004105 has 24 divisors (see below), whose sum is σ = 59555520. Its totient is φ = 28192320.

The previous prime is 42004103. The next prime is 42004111. The reversal of 42004105 is 50140024.

It is not a de Polignac number, because 42004105 - 2¹ = 42004103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42004103) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7036 + ... + 11554.

It is an arithmetic number, because the mean of its divisors is an integer number (2481480).

Almost surely, 2^42004105 is an apocalyptic number.

It is an amenable number.

42004105 is a deficient number, since it is larger than the sum of its proper divisors (17551415).

42004105 is a wasteful number, since it uses less digits than its factorization.

42004105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561 (or 4548 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42004105 is about 6481.0573982954. The cubic root of 42004105 is about 347.6139887938.

Adding to 42004105 its reverse (50140024), we get a palindrome (92144129).

The spelling of 42004105 in words is "forty-two million, four thousand, one hundred five".