142168885 has 8 divisors (see below), whose sum is σ = 170709336. Its totient is φ = 113664000.

The previous prime is 142168877. The next prime is 142168891. The reversal of 142168885 is 588861241.

142168885 is digitally balanced in base 2, because in such base 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 34963569 + 107205316 = 5913^2 + 10354^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142168885 - 2³ = 142168877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885 + ... + 16885.

It is an arithmetic number, because the mean of its divisors is an integer number (21338667).

Almost surely, 2^142168885 is an apocalyptic number.

It is an amenable number.

142168885 is a deficient number, since it is larger than the sum of its proper divisors (28540451).

142168885 is a wasteful number, since it uses less digits than its factorization.

142168885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17783.

The product of its digits is 122880, while the sum is 43.

The square root of 142168885 is about 11923.4594392735. The cubic root of 142168885 is about 521.9170914453.

The spelling of 142168885 in words is "one hundred forty-two million, one hundred sixty-eight thousand, eight hundred eighty-five".