665015042 has 8 divisors (see below), whose sum is σ = 1003496256. Its totient is φ = 330516292.

The previous prime is 665015033. The next prime is 665015047. The reversal of 665015042 is 240510566.

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

It is a junction number, because it is equal to n+sod(n) for n = 665014996 and 665015014.

It is not an unprimeable number, because it can be changed into a prime (665015047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 995198 + ... + 995865.

It is an arithmetic number, because the mean of its divisors is an integer number (125437032).

Almost surely, 2^665015042 is an apocalyptic number.

665015042 is a deficient number, since it is larger than the sum of its proper divisors (338481214).

665015042 is a wasteful number, since it uses less digits than its factorization.

665015042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991232.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 665015042 is about 25787.8855666765. The cubic root of 665015042 is about 872.8584546409.

The spelling of 665015042 in words is "six hundred sixty-five million, fifteen thousand, forty-two".