142206660 has 72 divisors (see below), whose sum is σ = 432333720. Its totient is φ = 37836288.

The previous prime is 142206619. The next prime is 142206661. The reversal of 142206660 is 66602241.

It is a happy number.

142206660 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13883076 + 128323584 = 3726^2 + 11328^2 .

It is not an unprimeable number, because it can be changed into a prime (142206661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148744 + ... + 149696.

It is an arithmetic number, because the mean of its divisors is an integer number (6004635).

Almost surely, 2^142206660 is an apocalyptic number.

142206660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142206660 is an abundant number, since it is smaller than the sum of its proper divisors (290127060).

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

142206660 is a wasteful number, since it uses less digits than its factorization.

142206660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 142206660 is about 11925.0433961475. The cubic root of 142206660 is about 521.9633126988.

The spelling of 142206660 in words is "one hundred forty-two million, two hundred six thousand, six hundred sixty".