66047042 has 8 divisors (see below), whose sum is σ = 100427916. Its totient is φ = 32571072.

The previous prime is 66047041. The next prime is 66047077. The reversal of 66047042 is 24074066.

It can be written as a sum of positive squares in 2 ways, for example, as 65918161 + 128881 = 8119^2 + 359^2 .

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

It is a super-3 number, since 3×66047042³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66046996 and 66047014.

It is not an unprimeable number, because it can be changed into a prime (66047041) 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, 226043 + ... + 226334.

Almost surely, 2^66047042 is an apocalyptic number.

66047042 is a deficient number, since it is larger than the sum of its proper divisors (34380874).

66047042 is a wasteful number, since it uses less digits than its factorization.

66047042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452452.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 66047042 is about 8126.9331238789. The cubic root of 66047042 is about 404.2199934076.

The spelling of 66047042 in words is "sixty-six million, forty-seven thousand, forty-two".