242743961 has 2 divisors, whose sum is σ = 242743962. Its totient is φ = 242743960.

The previous prime is 242743931. The next prime is 242743993. The reversal of 242743961 is 169347242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231648400 + 11095561 = 15220^2 + 3331^2 .

It is a cyclic number.

It is not a de Polignac number, because 242743961 - 2¹⁰ = 242742937 is a prime.

It is not a weakly prime, because it can be changed into another prime (242743931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121371980 + 121371981.

It is an arithmetic number, because the mean of its divisors is an integer number (121371981).

Almost surely, 2^242743961 is an apocalyptic number.

It is an amenable number.

242743961 is a deficient number, since it is larger than the sum of its proper divisors (1).

242743961 is an equidigital number, since it uses as much as digits as its factorization.

242743961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 242743961 is about 15580.2426489448. The cubic root of 242743961 is about 623.8059001070.

The spelling of 242743961 in words is "two hundred forty-two million, seven hundred forty-three thousand, nine hundred sixty-one".