42255065 has 4 divisors (see below), whose sum is σ = 50706084. Its totient is φ = 33804048.

The previous prime is 42255053. The next prime is 42255079. The reversal of 42255065 is 56055224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24167056 + 18088009 = 4916^2 + 4253^2 .

It is a cyclic number.

It is not a de Polignac number, because 42255065 - 2¹⁰ = 42254041 is a prime.

It is a Duffinian number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 4225502 + ... + 4225511.

It is an arithmetic number, because the mean of its divisors is an integer number (12676521).

Almost surely, 2^42255065 is an apocalyptic number.

It is an amenable number.

42255065 is a deficient number, since it is larger than the sum of its proper divisors (8451019).

42255065 is an equidigital number, since it uses as much as digits as its factorization.

42255065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8451018.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 42255065 is about 6500.3896037084. The cubic root of 42255065 is about 348.3049057382.

The spelling of 42255065 in words is "forty-two million, two hundred fifty-five thousand, sixty-five".