284121 has 16 divisors (see below), whose sum is σ = 446400. Its totient is φ = 177984.

The previous prime is 284117. The next prime is 284129. The reversal of 284121 is 121482.

It is not a de Polignac number, because 284121 - 2² = 284117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 284094 and 284103.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284121.

It is not an unprimeable number, because it can be changed into a prime (284129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150 + ... + 768.

It is an arithmetic number, because the mean of its divisors is an integer number (27900).

2²⁸⁴¹²¹ is an apocalyptic number.

It is an amenable number.

284121 is a deficient number, since it is larger than the sum of its proper divisors (162279).

284121 is a wasteful number, since it uses less digits than its factorization.

284121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 639 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 284121 is about 533.0300179164. The cubic root of 284121 is about 65.7407182800.

The spelling of 284121 in words is "two hundred eighty-four thousand, one hundred twenty-one".