242423161 has 2 divisors, whose sum is σ = 242423162. Its totient is φ = 242423160.

The previous prime is 242423123. The next prime is 242423173. The reversal of 242423161 is 161324242.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128595600 + 113827561 = 11340^2 + 10669^2 .

It is a cyclic number.

It is not a de Polignac number, because 242423161 - 2¹⁹ = 241898873 is a prime.

It is not a weakly prime, because it can be changed into another prime (242423191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121211580 + 121211581.

It is an arithmetic number, because the mean of its divisors is an integer number (121211581).

Almost surely, 2^242423161 is an apocalyptic number.

It is an amenable number.

242423161 is a deficient number, since it is larger than the sum of its proper divisors (1).

242423161 is an equidigital number, since it uses as much as digits as its factorization.

242423161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 242423161 is about 15569.9441553270. The cubic root of 242423161 is about 623.5309805964.

The spelling of 242423161 in words is "two hundred forty-two million, four hundred twenty-three thousand, one hundred sixty-one".