142881 has 8 divisors (see below), whose sum is σ = 192864. Its totient is φ = 94080.

The previous prime is 142873. The next prime is 142897. The reversal of 142881 is 188241.

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

It is not a de Polignac number, because 142881 - 2³ = 142873 is a prime.

It is a super-2 number, since 2×142881² = 40829960322, which contains 22 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142881.

It is not an unprimeable number, because it can be changed into a prime (142811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46 + ... + 536.

It is an arithmetic number, because the mean of its divisors is an integer number (24108).

2¹⁴²⁸⁸¹ is an apocalyptic number.

It is an amenable number.

142881 is a deficient number, since it is larger than the sum of its proper divisors (49983).

142881 is an equidigital number, since it uses as much as digits as its factorization.

142881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591.

The product of its digits is 512, while the sum is 24.

The square root of 142881 is about 377.9960317252. The cubic root of 142881 is about 52.2787057148.

The spelling of 142881 in words is "one hundred forty-two thousand, eight hundred eighty-one".