142887 has 4 divisors (see below), whose sum is σ = 190520. Its totient is φ = 95256.

The previous prime is 142873. The next prime is 142897. The reversal of 142887 is 788241.

142887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788241 = 3 ⋅262747.

It is not a de Polignac number, because 142887 - 2⁴ = 142871 is a prime.

It is a D-number.

It is a Duffinian number.

142887 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142887.

It is not an unprimeable number, because it can be changed into a prime (142837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23812 + ... + 23817.

It is an arithmetic number, because the mean of its divisors is an integer number (47630).

2¹⁴²⁸⁸⁷ is an apocalyptic number.

142887 is a deficient number, since it is larger than the sum of its proper divisors (47633).

142887 is an equidigital number, since it uses as much as digits as its factorization.

142887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47632.

The product of its digits is 3584, while the sum is 30.

The square root of 142887 is about 378.0039682331. The cubic root of 142887 is about 52.2794374842.

The spelling of 142887 in words is "one hundred forty-two thousand, eight hundred eighty-seven".