66145042 has 16 divisors (see below), whose sum is σ = 105114240. Its totient is φ = 31129488.

The previous prime is 66145039. The next prime is 66145049. The reversal of 66145042 is 24054166.

66145042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 66145042.

It is not an unprimeable number, because it can be changed into a prime (66145049) 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 7 ways as a sum of consecutive naturals, for example, 423 + ... + 11509.

It is an arithmetic number, because the mean of its divisors is an integer number (6569640).

Almost surely, 2^66145042 is an apocalyptic number.

66145042 is a deficient number, since it is larger than the sum of its proper divisors (38969198).

66145042 is a wasteful number, since it uses less digits than its factorization.

66145042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11265.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 66145042 is about 8132.9602236824. The cubic root of 66145042 is about 404.4198205891.

The spelling of 66145042 in words is "sixty-six million, one hundred forty-five thousand, forty-two".