1666142006 has 8 divisors (see below), whose sum is σ = 2499569280. Its totient is φ = 832952248.

The previous prime is 1666141993. The next prime is 1666142029. The reversal of 1666142006 is 6002416661.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40661 + ... + 70608.

It is an arithmetic number, because the mean of its divisors is an integer number (312446160).

Almost surely, 2^1666142006 is an apocalyptic number.

1666142006 is a deficient number, since it is larger than the sum of its proper divisors (833427274).

1666142006 is a wasteful number, since it uses less digits than its factorization.

1666142006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118758.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1666142006 is about 40818.4027859984. The cubic root of 1666142006 is about 1185.5066776389.

Adding to 1666142006 its reverse (6002416661), we get a palindrome (7668558667).

The spelling of 1666142006 in words is "one billion, six hundred sixty-six million, one hundred forty-two thousand, six".