240120169 has 2 divisors, whose sum is σ = 240120170. Its totient is φ = 240120168.

The previous prime is 240120073. The next prime is 240120187. The reversal of 240120169 is 961021042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231192025 + 8928144 = 15205^2 + 2988^2 .

It is a cyclic number.

It is not a de Polignac number, because 240120169 - 2¹¹ = 240118121 is a prime.

It is a super-2 number, since 2×240120169² = 115315391121177122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240121169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120060084 + 120060085.

It is an arithmetic number, because the mean of its divisors is an integer number (120060085).

Almost surely, 2^240120169 is an apocalyptic number.

It is an amenable number.

240120169 is a deficient number, since it is larger than the sum of its proper divisors (1).

240120169 is an equidigital number, since it uses as much as digits as its factorization.

240120169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 240120169 is about 15495.8113372614. The cubic root of 240120169 is about 621.5502041687.

It can be divided in two parts, 240 and 120169, that added together give a square (120409 = 347²).

The spelling of 240120169 in words is "two hundred forty million, one hundred twenty thousand, one hundred sixty-nine".