287142 has 8 divisors (see below), whose sum is σ = 574296. Its totient is φ = 95712.

The previous prime is 287141. The next prime is 287149. The reversal of 287142 is 241782.

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

287142 is an admirable 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 287142.

It is not an unprimeable number, because it can be changed into a prime (287141) 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, 23923 + ... + 23934.

It is an arithmetic number, because the mean of its divisors is an integer number (71787).

2²⁸⁷¹⁴² is an apocalyptic number.

287142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287142 is a wasteful number, since it uses less digits than its factorization.

287142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47862.

The product of its digits is 896, while the sum is 24.

The square root of 287142 is about 535.8563240273. The cubic root of 287142 is about 65.9728998014.

The spelling of 287142 in words is "two hundred eighty-seven thousand, one hundred forty-two".