42228605 has 8 divisors (see below), whose sum is σ = 51176664. Its totient is φ = 33448000.

The previous prime is 42228587. The next prime is 42228679. The reversal of 42228605 is 50682224.

It can be written as a sum of positive squares in 4 ways, for example, as 28847641 + 13380964 = 5371^2 + 3658^2 .

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

It is not a de Polignac number, because 42228605 - 2⁸ = 42228349 is a prime.

It is a Duffinian number.

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, 41306 + ... + 42315.

It is an arithmetic number, because the mean of its divisors is an integer number (6397083).

Almost surely, 2^42228605 is an apocalyptic number.

It is an amenable number.

42228605 is a deficient number, since it is larger than the sum of its proper divisors (8948059).

42228605 is a wasteful number, since it uses less digits than its factorization.

42228605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83727.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 42228605 is about 6498.3540223660. The cubic root of 42228605 is about 348.2321880480.

The spelling of 42228605 in words is "forty-two million, two hundred twenty-eight thousand, six hundred five".