142587 has 8 divisors (see below), whose sum is σ = 211280. Its totient is φ = 95040.

The previous prime is 142573. The next prime is 142589. The reversal of 142587 is 785241.

It is not a de Polignac number, because 142587 - 2¹⁵ = 109819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5281 = 142587 / (1 + 4 + 2 + 5 + 8 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142587.

It is not an unprimeable number, because it can be changed into a prime (142589) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2614 + ... + 2667.

It is an arithmetic number, because the mean of its divisors is an integer number (26410).

2¹⁴²⁵⁸⁷ is an apocalyptic number.

142587 is a deficient number, since it is larger than the sum of its proper divisors (68693).

142587 is an equidigital number, since it uses as much as digits as its factorization.

142587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290 (or 5284 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 142587 is about 377.6069384956. The cubic root of 142587 is about 52.2428238887.

It can be divided in two parts, 142 and 587, that added together give a 6-th power (729 = 3⁶).

The spelling of 142587 in words is "one hundred forty-two thousand, five hundred eighty-seven".