240404134145121 has 12 divisors (see below), whose sum is σ = 347250550363860. Its totient is φ = 160269360743520.

The previous prime is 240404134145111. The next prime is 240404134145207. The reversal of 240404134145121 is 121541431404042.

240404134145121 is a `hidden beast` number, since 2 + 4 + 0 + 4 + 0 + 4 + 134 + 1 + 4 + 512 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12097624810896 + 228306509334225 = 3478164^2 + 15109815^2 .

It is not a de Polignac number, because 240404134145121 - 2¹¹ = 240404134143073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240404134145111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43896715 + ... + 49068623.

It is an arithmetic number, because the mean of its divisors is an integer number (28937545863655).

Almost surely, 2^{240404134145121} is an apocalyptic number.

It is an amenable number.

240404134145121 is a deficient number, since it is larger than the sum of its proper divisors (106846416218739).

240404134145121 is a wasteful number, since it uses less digits than its factorization.

240404134145121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10336656 (or 10336653 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

Adding to 240404134145121 its reverse (121541431404042), we get a palindrome (361945565549163).

The spelling of 240404134145121 in words is "two hundred forty trillion, four hundred four billion, one hundred thirty-four million, one hundred forty-five thousand, one hundred twenty-one".