243010339421 has 2 divisors, whose sum is σ = 243010339422. Its totient is φ = 243010339420.

The previous prime is 243010339387. The next prime is 243010339441. The reversal of 243010339421 is 124933010342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224544247321 + 18466092100 = 473861^2 + 135890^2 .

It is a cyclic number.

It is not a de Polignac number, because 243010339421 - 2⁶ = 243010339357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243010339441) 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 as a sum of consecutive naturals, namely, 121505169710 + 121505169711.

It is an arithmetic number, because the mean of its divisors is an integer number (121505169711).

Almost surely, 2^243010339421 is an apocalyptic number.

It is an amenable number.

243010339421 is a deficient number, since it is larger than the sum of its proper divisors (1).

243010339421 is an equidigital number, since it uses as much as digits as its factorization.

243010339421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 243010339421 its reverse (124933010342), we get a palindrome (367943349763).

The spelling of 243010339421 in words is "two hundred forty-three billion, ten million, three hundred thirty-nine thousand, four hundred twenty-one".