120144257 has 2 divisors, whose sum is σ = 120144258. Its totient is φ = 120144256.

The previous prime is 120144221. The next prime is 120144289. The reversal of 120144257 is 752441021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112169281 + 7974976 = 10591^2 + 2824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120144257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120140257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60072128 + 60072129.

It is an arithmetic number, because the mean of its divisors is an integer number (60072129).

Almost surely, 2^120144257 is an apocalyptic number.

It is an amenable number.

120144257 is a deficient number, since it is larger than the sum of its proper divisors (1).

120144257 is an equidigital number, since it uses as much as digits as its factorization.

120144257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 120144257 is about 10961.0335735276. The cubic root of 120144257 is about 493.4399848044.

Adding to 120144257 its reverse (752441021), we get a palindrome (872585278).

The spelling of 120144257 in words is "one hundred twenty million, one hundred forty-four thousand, two hundred fifty-seven".