42905045 has 8 divisors (see below), whose sum is σ = 51892224. Its totient is φ = 34053264.

The previous prime is 42905033. The next prime is 42905063. The reversal of 42905045 is 54050924.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42905045 - 2⁴ = 42905029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42904999 and 42905017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33149 + ... + 34418.

It is an arithmetic number, because the mean of its divisors is an integer number (6486528).

Almost surely, 2^42905045 is an apocalyptic number.

It is an amenable number.

42905045 is a deficient number, since it is larger than the sum of its proper divisors (8987179).

42905045 is a wasteful number, since it uses less digits than its factorization.

42905045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67699.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 42905045 is about 6550.1942719281. The cubic root of 42905045 is about 350.0817360126.

Adding to 42905045 its reverse (54050924), we get a palindrome (96955969).

The spelling of 42905045 in words is "forty-two million, nine hundred five thousand, forty-five".