120506161 has 2 divisors, whose sum is σ = 120506162. Its totient is φ = 120506160.

The previous prime is 120506147. The next prime is 120506173. The reversal of 120506161 is 161605021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65286400 + 55219761 = 8080^2 + 7431^2 .

It is a cyclic number.

It is not a de Polignac number, because 120506161 - 2¹¹ = 120504113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120503161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60253080 + 60253081.

It is an arithmetic number, because the mean of its divisors is an integer number (60253081).

Almost surely, 2^120506161 is an apocalyptic number.

It is an amenable number.

120506161 is a deficient number, since it is larger than the sum of its proper divisors (1).

120506161 is an equidigital number, since it uses as much as digits as its factorization.

120506161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 120506161 is about 10977.5298223234. The cubic root of 120506161 is about 493.9349422868.

The spelling of 120506161 in words is "one hundred twenty million, five hundred six thousand, one hundred sixty-one".