298421 has 4 divisors (see below), whose sum is σ = 299532. Its totient is φ = 297312.

The previous prime is 298411. The next prime is 298427. The reversal of 298421 is 124892.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 168100 + 130321 = 410^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 298421 - 2¹⁰ = 297397 is a prime.

It is a Duffinian 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 298421.

It is not an unprimeable number, because it can be changed into a prime (298427) 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, 131 + ... + 783.

It is an arithmetic number, because the mean of its divisors is an integer number (74883).

2²⁹⁸⁴²¹ is an apocalyptic number.

It is an amenable number.

298421 is a deficient number, since it is larger than the sum of its proper divisors (1111).

298421 is an equidigital number, since it uses as much as digits as its factorization.

298421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110.

The product of its digits is 1152, while the sum is 26.

The square root of 298421 is about 546.2792326274. The cubic root of 298421 is about 66.8256400550.

The spelling of 298421 in words is "two hundred ninety-eight thousand, four hundred twenty-one".