243982429 has 2 divisors, whose sum is σ = 243982430. Its totient is φ = 243982428.

The previous prime is 243982421. The next prime is 243982463. The reversal of 243982429 is 924289342.

243982429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242518329 + 1464100 = 15573^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 243982429 - 2³ = 243982421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243982421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121991214 + 121991215.

It is an arithmetic number, because the mean of its divisors is an integer number (121991215).

Almost surely, 2^243982429 is an apocalyptic number.

It is an amenable number.

243982429 is a deficient number, since it is larger than the sum of its proper divisors (1).

243982429 is an equidigital number, since it uses as much as digits as its factorization.

243982429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 243982429 is about 15619.9369076831. The cubic root of 243982429 is about 624.8649769121.

The spelling of 243982429 in words is "two hundred forty-three million, nine hundred eighty-two thousand, four hundred twenty-nine".