66091142 has 8 divisors (see below), whose sum is σ = 106762656. Its totient is φ = 30503592.

The previous prime is 66091141. The next prime is 66091153. The reversal of 66091142 is 24119066.

66091142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66091141) 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 3 ways as a sum of consecutive naturals, for example, 1270958 + ... + 1271009.

It is an arithmetic number, because the mean of its divisors is an integer number (13345332).

Almost surely, 2^66091142 is an apocalyptic number.

66091142 is a deficient number, since it is larger than the sum of its proper divisors (40671514).

66091142 is a wasteful number, since it uses less digits than its factorization.

66091142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541982.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 66091142 is about 8129.6458717462. The cubic root of 66091142 is about 404.3099400836.

The spelling of 66091142 in words is "sixty-six million, ninety-one thousand, one hundred forty-two".