666357142 has 8 divisors (see below), whose sum is σ = 1090402632. Its totient is φ = 302889600.

The previous prime is 666357119. The next prime is 666357233. The reversal of 666357142 is 241753666.

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

It is a junction number, because it is equal to n+sod(n) for n = 666357095 and 666357104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15144459 + ... + 15144502.

It is an arithmetic number, because the mean of its divisors is an integer number (136300329).

Almost surely, 2^666357142 is an apocalyptic number.

666357142 is a deficient number, since it is larger than the sum of its proper divisors (424045490).

666357142 is a wasteful number, since it uses less digits than its factorization.

666357142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30288974.

The product of its digits is 181440, while the sum is 40.

The square root of 666357142 is about 25813.8943594336. The cubic root of 666357142 is about 873.4452464564.

The spelling of 666357142 in words is "six hundred sixty-six million, three hundred fifty-seven thousand, one hundred forty-two".