287242 has 8 divisors (see below), whose sum is σ = 453600. Its totient is φ = 136044.

The previous prime is 287239. The next prime is 287251. The reversal of 287242 is 242782.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3742 + ... + 3817.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2²⁸⁷²⁴² is an apocalyptic number.

287242 is a deficient number, since it is larger than the sum of its proper divisors (166358).

287242 is a wasteful number, since it uses less digits than its factorization.

287242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580.

The product of its digits is 1792, while the sum is 25.

The square root of 287242 is about 535.9496244984. The cubic root of 287242 is about 65.9805574810.

It can be divided in two parts, 287 and 242, that added together give a square (529 = 23²).

The spelling of 287242 in words is "two hundred eighty-seven thousand, two hundred forty-two".