242535521 has 2 divisors, whose sum is σ = 242535522. Its totient is φ = 242535520.

The previous prime is 242535493. The next prime is 242535539. The reversal of 242535521 is 125535242.

242535521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156250000 + 86285521 = 12500^2 + 9289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242535521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242535581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121267760 + 121267761.

It is an arithmetic number, because the mean of its divisors is an integer number (121267761).

Almost surely, 2^242535521 is an apocalyptic number.

It is an amenable number.

242535521 is a deficient number, since it is larger than the sum of its proper divisors (1).

242535521 is an equidigital number, since it uses as much as digits as its factorization.

242535521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 29.

The square root of 242535521 is about 15573.5519712107. The cubic root of 242535521 is about 623.6272985658.

The spelling of 242535521 in words is "two hundred forty-two million, five hundred thirty-five thousand, five hundred twenty-one".