142650666 has 32 divisors (see below), whose sum is σ = 322989120. Its totient is φ = 46652112.

The previous prime is 142650661. The next prime is 142650679. The reversal of 142650666 is 666056241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 142650666.

It is not an unprimeable number, because it can be changed into a prime (142650661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22060 + ... + 27783.

It is an arithmetic number, because the mean of its divisors is an integer number (10093410).

Almost surely, 2^142650666 is an apocalyptic number.

142650666 is an abundant number, since it is smaller than the sum of its proper divisors (180338454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142650666 is a wasteful number, since it uses less digits than its factorization.

142650666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49907 (or 49901 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 142650666 is about 11943.6454234040. The cubic root of 142650666 is about 522.5059831584.

The spelling of 142650666 in words is "one hundred forty-two million, six hundred fifty thousand, six hundred sixty-six".