242504533 has 2 divisors, whose sum is σ = 242504534. Its totient is φ = 242504532.

The previous prime is 242504531. The next prime is 242504567. The reversal of 242504533 is 335405242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171557604 + 70946929 = 13098^2 + 8423^2 .

It is a cyclic number.

It is not a de Polignac number, because 242504533 - 2¹ = 242504531 is a prime.

Together with 242504531, 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 (242504531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121252266 + 121252267.

It is an arithmetic number, because the mean of its divisors is an integer number (121252267).

Almost surely, 2^242504533 is an apocalyptic number.

It is an amenable number.

242504533 is a deficient number, since it is larger than the sum of its proper divisors (1).

242504533 is an equidigital number, since it uses as much as digits as its factorization.

242504533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 242504533 is about 15572.5570475757. The cubic root of 242504533 is about 623.6007378023.

Adding to 242504533 its reverse (335405242), we get a palindrome (577909775).

The spelling of 242504533 in words is "two hundred forty-two million, five hundred four thousand, five hundred thirty-three".