66142136 has 16 divisors (see below), whose sum is σ = 124140600. Its totient is φ = 33037984.

The previous prime is 66142129. The next prime is 66142147. The reversal of 66142136 is 63124166.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66142099 and 66142108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5750 + ... + 12858.

Almost surely, 2^66142136 is an apocalyptic number.

It is an amenable number.

66142136 is a deficient number, since it is larger than the sum of its proper divisors (57998464).

66142136 is a wasteful number, since it uses less digits than its factorization.

66142136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8278 (or 8274 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 66142136 is about 8132.7815659834. The cubic root of 66142136 is about 404.4138979421.

The spelling of 66142136 in words is "sixty-six million, one hundred forty-two thousand, one hundred thirty-six".