242021933 has 2 divisors, whose sum is σ = 242021934. Its totient is φ = 242021932.

The previous prime is 242021891. The next prime is 242021947. The reversal of 242021933 is 339120242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223891369 + 18130564 = 14963^2 + 4258^2 .

It is a cyclic number.

It is not a de Polignac number, because 242021933 - 2⁶ = 242021869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242021833) 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, 121010966 + 121010967.

It is an arithmetic number, because the mean of its divisors is an integer number (121010967).

Almost surely, 2^242021933 is an apocalyptic number.

It is an amenable number.

242021933 is a deficient number, since it is larger than the sum of its proper divisors (1).

242021933 is an equidigital number, since it uses as much as digits as its factorization.

242021933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 242021933 is about 15557.0541234515. The cubic root of 242021933 is about 623.1867942361.

The spelling of 242021933 in words is "two hundred forty-two million, twenty-one thousand, nine hundred thirty-three".