286121 has 12 divisors (see below), whose sum is σ = 337680. Its totient is φ = 239760.

The previous prime is 286103. The next prime is 286129. The reversal of 286121 is 121682.

It is not a de Polignac number, because 286121 - 2¹⁸ = 23977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 286093 and 286102.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286121.

It is not an unprimeable number, because it can be changed into a prime (286129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7715 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (28140).

2²⁸⁶¹²¹ is an apocalyptic number.

It is an amenable number.

286121 is a deficient number, since it is larger than the sum of its proper divisors (51559).

286121 is a wasteful number, since it uses less digits than its factorization.

286121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 67 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 286121 is about 534.9027949076. The cubic root of 286121 is about 65.8946129551.

It can be divided in two parts, 2861 and 21, that added together give a palindrome (2882).

The spelling of 286121 in words is "two hundred eighty-six thousand, one hundred twenty-one".