42455065 has 8 divisors (see below), whose sum is σ = 51241608. Its totient is φ = 33767040.

The previous prime is 42455059. The next prime is 42455087. The reversal of 42455065 is 56055424.

It can be written as a sum of positive squares in 4 ways, for example, as 12194064 + 30261001 = 3492^2 + 5501^2 .

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

It is not a de Polignac number, because 42455065 - 2⁹ = 42454553 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, 23676 + ... + 25405.

It is an arithmetic number, because the mean of its divisors is an integer number (6405201).

Almost surely, 2^42455065 is an apocalyptic number.

It is an amenable number.

42455065 is a deficient number, since it is larger than the sum of its proper divisors (8786543).

42455065 is a wasteful number, since it uses less digits than its factorization.

42455065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49259.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 42455065 is about 6515.7551365901. The cubic root of 42455065 is about 348.8535686714.

The spelling of 42455065 in words is "forty-two million, four hundred fifty-five thousand, sixty-five".