240432121 has 2 divisors, whose sum is σ = 240432122. Its totient is φ = 240432120.

The previous prime is 240432109. The next prime is 240432131. The reversal of 240432121 is 121234042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148962025 + 91470096 = 12205^2 + 9564^2 .

It is a cyclic number.

It is not a de Polignac number, because 240432121 - 2⁵ = 240432089 is a prime.

It is not a weakly prime, because it can be changed into another prime (240432131) 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, 120216060 + 120216061.

It is an arithmetic number, because the mean of its divisors is an integer number (120216061).

Almost surely, 2^240432121 is an apocalyptic number.

It is an amenable number.

240432121 is a deficient number, since it is larger than the sum of its proper divisors (1).

240432121 is an equidigital number, since it uses as much as digits as its factorization.

240432121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 240432121 is about 15505.8737580312. The cubic root of 240432121 is about 621.8192499066.

Adding to 240432121 its reverse (121234042), we get a palindrome (361666163).

The spelling of 240432121 in words is "two hundred forty million, four hundred thirty-two thousand, one hundred twenty-one".