242551129 has 2 divisors, whose sum is σ = 242551130. Its totient is φ = 242551128.

The previous prime is 242551081. The next prime is 242551163. The reversal of 242551129 is 921155242.

242551129 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., 240963529 + 1587600 = 15523^2 + 1260^2 .

It is a cyclic number.

It is not a de Polignac number, because 242551129 - 2¹⁵ = 242518361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242551129.

It is not a weakly prime, because it can be changed into another prime (242551429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121275564 + 121275565.

It is an arithmetic number, because the mean of its divisors is an integer number (121275565).

Almost surely, 2^242551129 is an apocalyptic number.

It is an amenable number.

242551129 is a deficient number, since it is larger than the sum of its proper divisors (1).

242551129 is an equidigital number, since it uses as much as digits as its factorization.

242551129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 242551129 is about 15574.0530691275. The cubic root of 242551129 is about 623.6406758037.

The spelling of 242551129 in words is "two hundred forty-two million, five hundred fifty-one thousand, one hundred twenty-nine".