4042045 has 16 divisors (see below), whose sum is σ = 5650560. Its totient is φ = 2718144.

The previous prime is 4042037. The next prime is 4042057. The reversal of 4042045 is 5402404.

It is a cyclic number.

It is not a de Polignac number, because 4042045 - 2³ = 4042037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 766 + ... + 2944.

It is an arithmetic number, because the mean of its divisors is an integer number (353160).

Almost surely, 2^4042045 is an apocalyptic number.

It is an amenable number.

4042045 is a deficient number, since it is larger than the sum of its proper divisors (1608515).

4042045 is a wasteful number, since it uses less digits than its factorization.

4042045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4042045 is about 2010.4837726279. The cubic root of 4042045 is about 159.2943534056.

Adding to 4042045 its reverse (5402404), we get a palindrome (9444449).

The spelling of 4042045 in words is "four million, forty-two thousand, forty-five".