42356305 has 8 divisors (see below), whose sum is σ = 52201512. Its totient is φ = 32969088.

The previous prime is 42356287. The next prime is 42356329. The reversal of 42356305 is 50365324.

It can be written as a sum of positive squares in 4 ways, for example, as 13808656 + 28547649 = 3716^2 + 5343^2 .

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 42356305 - 2⁵ = 42356273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114292 + ... + 114661.

It is an arithmetic number, because the mean of its divisors is an integer number (6525189).

Almost surely, 2^42356305 is an apocalyptic number.

It is an amenable number.

42356305 is a deficient number, since it is larger than the sum of its proper divisors (9845207).

42356305 is a wasteful number, since it uses less digits than its factorization.

42356305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228995.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 42356305 is about 6508.1721704331. The cubic root of 42356305 is about 348.5828547767.

The spelling of 42356305 in words is "forty-two million, three hundred fifty-six thousand, three hundred five".