42044045 has 16 divisors (see below), whose sum is σ = 51554880. Its totient is φ = 32909184.

The previous prime is 42043993. The next prime is 42044047. The reversal of 42044045 is 54044024.

It is a cyclic number.

It is not a de Polignac number, because 42044045 - 2¹⁰ = 42043021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42044045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42044047) 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, 47174 + ... + 48056.

It is an arithmetic number, because the mean of its divisors is an integer number (3222180).

Almost surely, 2^42044045 is an apocalyptic number.

It is an amenable number.

42044045 is a deficient number, since it is larger than the sum of its proper divisors (9510835).

42044045 is a wasteful number, since it uses less digits than its factorization.

42044045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 42044045 is about 6484.1379534985. The cubic root of 42044045 is about 347.7241312394.

Adding to 42044045 its reverse (54044024), we get a palindrome (96088069).

The spelling of 42044045 in words is "forty-two million, forty-four thousand, forty-five".