665052042 has 8 divisors (see below), whose sum is σ = 1330104096. Its totient is φ = 221684012.

The previous prime is 665052029. The next prime is 665052043. The reversal of 665052042 is 240250566.

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

665052042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (665052043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55420998 + ... + 55421009.

It is an arithmetic number, because the mean of its divisors is an integer number (166263012).

Almost surely, 2^665052042 is an apocalyptic number.

665052042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665052042 is a wasteful number, since it uses less digits than its factorization.

665052042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110842012.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 665052042 is about 25788.6029478140. The cubic root of 665052042 is about 872.8746423268.

The spelling of 665052042 in words is "six hundred sixty-five million, fifty-two thousand, forty-two".