665002042 has 16 divisors (see below), whose sum is σ = 1022559552. Its totient is φ = 324160480.

The previous prime is 665002007. The next prime is 665002057. The reversal of 665002042 is 240200566.

It is a junction number, because it is equal to n+sod(n) for n = 665001998 and 665002016.

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, 197013 + ... + 200359.

It is an arithmetic number, because the mean of its divisors is an integer number (63909972).

Almost surely, 2^665002042 is an apocalyptic number.

665002042 is a deficient number, since it is larger than the sum of its proper divisors (357557510).

665002042 is a wasteful number, since it uses less digits than its factorization.

665002042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5813.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 665002042 is about 25787.6335091066. The cubic root of 665002042 is about 872.8527669330.

The spelling of 665002042 in words is "six hundred sixty-five million, two thousand, forty-two".