120710561 has 2 divisors, whose sum is σ = 120710562. Its totient is φ = 120710560.

The previous prime is 120710533. The next prime is 120710567. The reversal of 120710561 is 165017021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84180625 + 36529936 = 9175^2 + 6044^2 .

It is a cyclic number.

It is not a de Polignac number, because 120710561 - 2¹⁴ = 120694177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (120710567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60355280 + 60355281.

It is an arithmetic number, because the mean of its divisors is an integer number (60355281).

Almost surely, 2^120710561 is an apocalyptic number.

It is an amenable number.

120710561 is a deficient number, since it is larger than the sum of its proper divisors (1).

120710561 is an equidigital number, since it uses as much as digits as its factorization.

120710561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 120710561 is about 10986.8358047256. The cubic root of 120710561 is about 494.2140518716.

Adding to 120710561 its reverse (165017021), we get a palindrome (285727582).

The spelling of 120710561 in words is "one hundred twenty million, seven hundred ten thousand, five hundred sixty-one".