242500513 has 2 divisors, whose sum is σ = 242500514. Its totient is φ = 242500512.

The previous prime is 242500487. The next prime is 242500547. The reversal of 242500513 is 315005242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237406464 + 5094049 = 15408^2 + 2257^2 .

It is a cyclic number.

It is not a de Polignac number, because 242500513 - 2¹³ = 242492321 is a prime.

It is not a weakly prime, because it can be changed into another prime (242504513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121250256 + 121250257.

It is an arithmetic number, because the mean of its divisors is an integer number (121250257).

Almost surely, 2^242500513 is an apocalyptic number.

It is an amenable number.

242500513 is a deficient number, since it is larger than the sum of its proper divisors (1).

242500513 is an equidigital number, since it uses as much as digits as its factorization.

242500513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 242500513 is about 15572.4279738260. The cubic root of 242500513 is about 623.5972919715.

Adding to 242500513 its reverse (315005242), we get a palindrome (557505755).

The spelling of 242500513 in words is "two hundred forty-two million, five hundred thousand, five hundred thirteen".