142620660 has 144 divisors (see below), whose sum is σ = 532511616. Its totient is φ = 30087936.

The previous prime is 142620659. The next prime is 142620671. The reversal of 142620660 is 66026241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12027 + ... + 20733.

Almost surely, 2^142620660 is an apocalyptic number.

142620660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142620660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266255808).

142620660 is an abundant number, since it is smaller than the sum of its proper divisors (389890956).

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

142620660 is a wasteful number, since it uses less digits than its factorization.

142620660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8742 (or 8737 counting only the distinct ones).

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

The square root of 142620660 is about 11942.3892081945. The cubic root of 142620660 is about 522.4693449045.

The spelling of 142620660 in words is "one hundred forty-two million, six hundred twenty thousand, six hundred sixty".