42228305 has 16 divisors (see below), whose sum is σ = 58041984. Its totient is φ = 28892160.

The previous prime is 42228301. The next prime is 42228311. The reversal of 42228305 is 50382224.

It is not a de Polignac number, because 42228305 - 2² = 42228301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42228301) 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, 18929 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (3627624).

Almost surely, 2^42228305 is an apocalyptic number.

It is an amenable number.

42228305 is a deficient number, since it is larger than the sum of its proper divisors (15813679).

42228305 is a wasteful number, since it uses less digits than its factorization.

42228305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 42228305 is about 6498.3309395567. The cubic root of 42228305 is about 348.2313634103.

The spelling of 42228305 in words is "forty-two million, two hundred twenty-eight thousand, three hundred five".