336243421 has 2 divisors, whose sum is σ = 336243422. Its totient is φ = 336243420.

The previous prime is 336243379. The next prime is 336243473. The reversal of 336243421 is 124342633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228312100 + 107931321 = 15110^2 + 10389^2 .

It is a cyclic number.

It is not a de Polignac number, because 336243421 - 2⁷ = 336243293 is a prime.

It is a super-2 number, since 2×336243421² = 226119276331566482, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 336243421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (336243491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168121710 + 168121711.

It is an arithmetic number, because the mean of its divisors is an integer number (168121711).

Almost surely, 2^336243421 is an apocalyptic number.

It is an amenable number.

336243421 is a deficient number, since it is larger than the sum of its proper divisors (1).

336243421 is an equidigital number, since it uses as much as digits as its factorization.

336243421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 28.

The square root of 336243421 is about 18336.9414298023. The cubic root of 336243421 is about 695.3731729517.

The spelling of 336243421 in words is "three hundred thirty-six million, two hundred forty-three thousand, four hundred twenty-one".