142487 has 4 divisors (see below), whose sum is σ = 146376. Its totient is φ = 138600.

The previous prime is 142469. The next prime is 142501. The reversal of 142487 is 784241.

142487 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: 784241 = 53 ⋅14797.

It is a cyclic number.

It is not a de Polignac number, because 142487 - 2⁸ = 142231 is a prime.

It is a Duffinian 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 142487.

It is not an unprimeable number, because it can be changed into a prime (142427) 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, 1889 + ... + 1962.

It is an arithmetic number, because the mean of its divisors is an integer number (36594).

2¹⁴²⁴⁸⁷ is an apocalyptic number.

142487 is a deficient number, since it is larger than the sum of its proper divisors (3889).

142487 is an equidigital number, since it uses as much as digits as its factorization.

142487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888.

The product of its digits is 1792, while the sum is 26.

The square root of 142487 is about 377.4745024502. The cubic root of 142487 is about 52.2306079453.

The spelling of 142487 in words is "one hundred forty-two thousand, four hundred eighty-seven".