120242257 has 2 divisors, whose sum is σ = 120242258. Its totient is φ = 120242256.

The previous prime is 120242249. The next prime is 120242327. The reversal of 120242257 is 752242021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95082001 + 25160256 = 9751^2 + 5016^2 .

It is a cyclic number.

It is not a de Polignac number, because 120242257 - 2³ = 120242249 is a prime.

It is a super-3 number, since 3×120242257³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (120242237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60121128 + 60121129.

It is an arithmetic number, because the mean of its divisors is an integer number (60121129).

Almost surely, 2^120242257 is an apocalyptic number.

It is an amenable number.

120242257 is a deficient number, since it is larger than the sum of its proper divisors (1).

120242257 is an equidigital number, since it uses as much as digits as its factorization.

120242257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 120242257 is about 10965.5030436364. The cubic root of 120242257 is about 493.5741123874.

Adding to 120242257 its reverse (752242021), we get a palindrome (872484278).

The spelling of 120242257 in words is "one hundred twenty million, two hundred forty-two thousand, two hundred fifty-seven".