298642321 has 2 divisors, whose sum is σ = 298642322. Its totient is φ = 298642320.

The previous prime is 298642303. The next prime is 298642381. The reversal of 298642321 is 123246892.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157151296 + 141491025 = 12536^2 + 11895^2 .

It is a cyclic number.

It is not a de Polignac number, because 298642321 - 2⁷ = 298642193 is a prime.

It is not a weakly prime, because it can be changed into another prime (298642381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149321160 + 149321161.

It is an arithmetic number, because the mean of its divisors is an integer number (149321161).

Almost surely, 2^298642321 is an apocalyptic number.

It is an amenable number.

298642321 is a deficient number, since it is larger than the sum of its proper divisors (1).

298642321 is an equidigital number, since it uses as much as digits as its factorization.

298642321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 298642321 is about 17281.2708155390. The cubic root of 298642321 is about 668.4215616565.

The spelling of 298642321 in words is "two hundred ninety-eight million, six hundred forty-two thousand, three hundred twenty-one".