242142529 has 2 divisors, whose sum is σ = 242142530. Its totient is φ = 242142528.

The previous prime is 242142491. The next prime is 242142553. The reversal of 242142529 is 925241242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232501504 + 9641025 = 15248^2 + 3105^2 .

It is a cyclic number.

It is not a de Polignac number, because 242142529 - 2⁷ = 242142401 is a prime.

It is equal to p_13272673 and since 242142529 and 13272673 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242142529.

It is not a weakly prime, because it can be changed into another prime (242142569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121071264 + 121071265.

It is an arithmetic number, because the mean of its divisors is an integer number (121071265).

Almost surely, 2^242142529 is an apocalyptic number.

It is an amenable number.

242142529 is a deficient number, since it is larger than the sum of its proper divisors (1).

242142529 is an equidigital number, since it uses as much as digits as its factorization.

242142529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 242142529 is about 15560.9295673491. The cubic root of 242142529 is about 623.2902853460.

The spelling of 242142529 in words is "two hundred forty-two million, one hundred forty-two thousand, five hundred twenty-nine".