242403013 has 2 divisors, whose sum is σ = 242403014. Its totient is φ = 242403012.

The previous prime is 242403011. The next prime is 242403019. The reversal of 242403013 is 310304242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242051364 + 351649 = 15558^2 + 593^2 .

It is a cyclic number.

It is not a de Polignac number, because 242403013 - 2¹ = 242403011 is a prime.

It is a super-2 number, since 2×242403013² = 117518441422956338, which contains 22 as substring.

Together with 242403011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242403011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121201506 + 121201507.

It is an arithmetic number, because the mean of its divisors is an integer number (121201507).

Almost surely, 2^242403013 is an apocalyptic number.

It is an amenable number.

242403013 is a deficient number, since it is larger than the sum of its proper divisors (1).

242403013 is an equidigital number, since it uses as much as digits as its factorization.

242403013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 242403013 is about 15569.2971260748. The cubic root of 242403013 is about 623.5137060502.

Adding to 242403013 its reverse (310304242), we get a palindrome (552707255).

The spelling of 242403013 in words is "two hundred forty-two million, four hundred three thousand, thirteen".