442540065 has 16 divisors (see below), whose sum is σ = 772433856. Its totient is φ = 214564800.

The previous prime is 442540051. The next prime is 442540081. The reversal of 442540065 is 560045244.

It is not a de Polignac number, because 442540065 - 2⁹ = 442539553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340866 + ... + 1341195.

It is an arithmetic number, because the mean of its divisors is an integer number (48277116).

Almost surely, 2^442540065 is an apocalyptic number.

It is an amenable number.

442540065 is a deficient number, since it is larger than the sum of its proper divisors (329893791).

442540065 is a wasteful number, since it uses less digits than its factorization.

442540065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682080.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 442540065 is about 21036.6362567783. The cubic root of 442540065 is about 762.0512827067.

The spelling of 442540065 in words is "four hundred forty-two million, five hundred forty thousand, sixty-five".