243024020249 has 2 divisors, whose sum is σ = 243024020250. Its totient is φ = 243024020248.

The previous prime is 243024020237. The next prime is 243024020293. The reversal of 243024020249 is 942020420342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196996608649 + 46027411600 = 443843^2 + 214540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243024020249 is a prime.

It is not a weakly prime, because it can be changed into another prime (243024022249) 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, 121512010124 + 121512010125.

It is an arithmetic number, because the mean of its divisors is an integer number (121512010125).

Almost surely, 2^243024020249 is an apocalyptic number.

It is an amenable number.

243024020249 is a deficient number, since it is larger than the sum of its proper divisors (1).

243024020249 is an equidigital number, since it uses as much as digits as its factorization.

243024020249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 243024020249 in words is "two hundred forty-three billion, twenty-four million, twenty thousand, two hundred forty-nine".