142987 has 8 divisors (see below), whose sum is σ = 163296. Its totient is φ = 124032.

The previous prime is 142981. The next prime is 142993. The reversal of 142987 is 789241.

142987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142981) and next prime (142993).

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

It is not a de Polignac number, because 142987 - 2³ = 142979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103 + ... + 544.

It is an arithmetic number, because the mean of its divisors is an integer number (20412).

2¹⁴²⁹⁸⁷ is an apocalyptic number.

142987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

142987 is a deficient number, since it is larger than the sum of its proper divisors (20309).

142987 is a wasteful number, since it uses less digits than its factorization.

142987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its digits is 4032, while the sum is 31.

The square root of 142987 is about 378.1362188418. The cubic root of 142987 is about 52.2916306266.

The spelling of 142987 in words is "one hundred forty-two thousand, nine hundred eighty-seven".