298242021 has 32 divisors (see below), whose sum is σ = 497203200. Its totient is φ = 154486080.

The previous prime is 298242019. The next prime is 298242029. The reversal of 298242021 is 120242892.

It is not a de Polignac number, because 298242021 - 2¹ = 298242019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 298242021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298242029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88200 + ... + 91518.

It is an arithmetic number, because the mean of its divisors is an integer number (15537600).

Almost surely, 2^298242021 is an apocalyptic number.

298242021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

298242021 is a deficient number, since it is larger than the sum of its proper divisors (198961179).

298242021 is a wasteful number, since it uses less digits than its factorization.

298242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 298242021 is about 17269.6850289749. The cubic root of 298242021 is about 668.1227774908.

The spelling of 298242021 in words is "two hundred ninety-eight million, two hundred forty-two thousand, twenty-one".