120325661 has 2 divisors, whose sum is σ = 120325662. Its totient is φ = 120325660.

The previous prime is 120325649. The next prime is 120325679. The reversal of 120325661 is 166523021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112763161 + 7562500 = 10619^2 + 2750^2 .

It is a cyclic number.

It is not a de Polignac number, because 120325661 - 2²² = 116131357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120325661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120325631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60162830 + 60162831.

It is an arithmetic number, because the mean of its divisors is an integer number (60162831).

Almost surely, 2^120325661 is an apocalyptic number.

It is an amenable number.

120325661 is a deficient number, since it is larger than the sum of its proper divisors (1).

120325661 is an equidigital number, since it uses as much as digits as its factorization.

120325661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 120325661 is about 10969.3054018930. The cubic root of 120325661 is about 493.6882057794.

Adding to 120325661 its reverse (166523021), we get a palindrome (286848682).

The spelling of 120325661 in words is "one hundred twenty million, three hundred twenty-five thousand, six hundred sixty-one".