66142102 has 16 divisors (see below), whose sum is σ = 109452672. Its totient is φ = 29782080.

The previous prime is 66142099. The next prime is 66142123. The reversal of 66142102 is 20124166.

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 7 ways as a sum of consecutive naturals, for example, 29958 + ... + 32089.

It is an arithmetic number, because the mean of its divisors is an integer number (6840792).

Almost surely, 2^66142102 is an apocalyptic number.

66142102 is a deficient number, since it is larger than the sum of its proper divisors (43310570).

66142102 is a wasteful number, since it uses less digits than its factorization.

66142102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62103.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 66142102 is about 8132.7794756774. The cubic root of 66142102 is about 404.4138286465.

Adding to 66142102 its reverse (20124166), we get a palindrome (86266268).

The spelling of 66142102 in words is "sixty-six million, one hundred forty-two thousand, one hundred two".