240045121 has 16 divisors (see below), whose sum is σ = 256942080. Its totient is φ = 223874640.

The previous prime is 240045103. The next prime is 240045133. The reversal of 240045121 is 121540042.

It is a cyclic number.

It is not a de Polignac number, because 240045121 - 2¹¹ = 240043073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240045161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96390 + ... + 98848.

It is an arithmetic number, because the mean of its divisors is an integer number (16058880).

Almost surely, 2^240045121 is an apocalyptic number.

It is an amenable number.

240045121 is a deficient number, since it is larger than the sum of its proper divisors (16896959).

240045121 is a wasteful number, since it uses less digits than its factorization.

240045121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 240045121 is about 15493.3895904027. The cubic root of 240045121 is about 621.4854435943.

Adding to 240045121 its reverse (121540042), we get a palindrome (361585163).

The spelling of 240045121 in words is "two hundred forty million, forty-five thousand, one hundred twenty-one".