298121 has 4 divisors (see below), whose sum is σ = 304512. Its totient is φ = 291732.

The previous prime is 298099. The next prime is 298153. The reversal of 298121 is 121892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 298121 - 2¹⁰ = 297097 is a prime.

It is a super-2 number, since 2×298121² = 177752261282, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 298121.

It is not an unprimeable number, because it can be changed into a prime (298171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3125 + ... + 3218.

It is an arithmetic number, because the mean of its divisors is an integer number (76128).

2²⁹⁸¹²¹ is an apocalyptic number.

It is an amenable number.

298121 is a deficient number, since it is larger than the sum of its proper divisors (6391).

298121 is an equidigital number, since it uses as much as digits as its factorization.

298121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6390.

The product of its digits is 288, while the sum is 23.

The square root of 298121 is about 546.0045787354. The cubic root of 298121 is about 66.8032394714.

The spelling of 298121 in words is "two hundred ninety-eight thousand, one hundred twenty-one".