142664660 has 12 divisors (see below), whose sum is σ = 299595828. Its totient is φ = 57065856.

The previous prime is 142664657. The next prime is 142664671. The reversal of 142664660 is 66466241.

It can be written as a sum of positive squares in 2 ways, for example, as 38093584 + 104571076 = 6172^2 + 10226^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142664660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3566597 + ... + 3566636.

It is an arithmetic number, because the mean of its divisors is an integer number (24966319).

Almost surely, 2^142664660 is an apocalyptic number.

142664660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142664660 is an abundant number, since it is smaller than the sum of its proper divisors (156931168).

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

142664660 is a wasteful number, since it uses less digits than its factorization.

142664660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7133242 (or 7133240 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 142664660 is about 11944.2312435753. The cubic root of 142664660 is about 522.5230685083.

The spelling of 142664660 in words is "one hundred forty-two million, six hundred sixty-four thousand, six hundred sixty".