42004306066 has 4 divisors (see below), whose sum is σ = 63006459102. Its totient is φ = 21002153032.

The previous prime is 42004306049. The next prime is 42004306067. The reversal of 42004306066 is 66060340024.

42004306066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36779184841 + 5225121225 = 191779^2 + 72285^2 .

It is not an unprimeable number, because it can be changed into a prime (42004306067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501076515 + ... + 10501076518.

Almost surely, 2^42004306066 is an apocalyptic number.

42004306066 is a deficient number, since it is larger than the sum of its proper divisors (21002153036).

42004306066 is a wasteful number, since it uses less digits than its factorization.

42004306066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21002153035.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 42004306066 in words is "forty-two billion, four million, three hundred six thousand, sixty-six".