42043045 has 16 divisors (see below), whose sum is σ = 56080512. Its totient is φ = 29997760.

The previous prime is 42043039. The next prime is 42043049. The reversal of 42043045 is 54034024.

It is a happy number.

It is not a de Polignac number, because 42043045 - 2¹⁵ = 42010277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42043049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4297 + ... + 10126.

It is an arithmetic number, because the mean of its divisors is an integer number (3505032).

Almost surely, 2^42043045 is an apocalyptic number.

It is an amenable number.

42043045 is a deficient number, since it is larger than the sum of its proper divisors (14037467).

42043045 is a wasteful number, since it uses less digits than its factorization.

42043045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14492.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42043045 is about 6484.0608417873. The cubic root of 42043045 is about 347.7213743933.

Adding to 42043045 its reverse (54034024), we get a palindrome (96077069).

The spelling of 42043045 in words is "forty-two million, forty-three thousand, forty-five".