142217660 has 48 divisors (see below), whose sum is σ = 338570400. Its totient is φ = 49745664.

The previous prime is 142217633. The next prime is 142217681. The reversal of 142217660 is 66712241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9455 + ... + 19334.

It is an arithmetic number, because the mean of its divisors is an integer number (7053550).

Almost surely, 2^142217660 is an apocalyptic number.

142217660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142217660 is an abundant number, since it is smaller than the sum of its proper divisors (196352740).

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

142217660 is a wasteful number, since it uses less digits than its factorization.

142217660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28830 (or 28828 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 142217660 is about 11925.5046014833. The cubic root of 142217660 is about 521.9767706911.

The spelling of 142217660 in words is "one hundred forty-two million, two hundred seventeen thousand, six hundred sixty".