42555305 has 8 divisors (see below), whose sum is σ = 54994632. Its totient is φ = 31425408.

The previous prime is 42555283. The next prime is 42555329. The reversal of 42555305 is 50355524.

It is a happy number.

42555305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6651241 + 35904064 = 2579^2 + 5992^2 .

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 42555305 - 2⁸ = 42555049 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327284 + ... + 327413.

It is an arithmetic number, because the mean of its divisors is an integer number (6874329).

Almost surely, 2^42555305 is an apocalyptic number.

It is an amenable number.

42555305 is a deficient number, since it is larger than the sum of its proper divisors (12439327).

42555305 is a wasteful number, since it uses less digits than its factorization.

42555305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654715.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 42555305 is about 6523.4427260458. The cubic root of 42555305 is about 349.1279104656.

The spelling of 42555305 in words is "forty-two million, five hundred fifty-five thousand, three hundred five".