120342161 has 2 divisors, whose sum is σ = 120342162. Its totient is φ = 120342160.

The previous prime is 120342139. The next prime is 120342163. The reversal of 120342161 is 161243021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80209936 + 40132225 = 8956^2 + 6335^2 .

It is a cyclic number.

It is not a de Polignac number, because 120342161 - 2⁶ = 120342097 is a prime.

Together with 120342163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120342163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60171080 + 60171081.

It is an arithmetic number, because the mean of its divisors is an integer number (60171081).

Almost surely, 2^120342161 is an apocalyptic number.

It is an amenable number.

120342161 is a deficient number, since it is larger than the sum of its proper divisors (1).

120342161 is an equidigital number, since it uses as much as digits as its factorization.

120342161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 120342161 is about 10970.0574747811. The cubic root of 120342161 is about 493.7107708832.

Adding to 120342161 its reverse (161243021), we get a palindrome (281585182).

The spelling of 120342161 in words is "one hundred twenty million, three hundred forty-two thousand, one hundred sixty-one".