240534303542121 has 4 divisors (see below), whose sum is σ = 320712404722832. Its totient is φ = 160356202361412.

The previous prime is 240534303542077. The next prime is 240534303542147. The reversal of 240534303542121 is 121245303435042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 240534303542121 - 2⁷ = 240534303541993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 240534303542121.

It is not an unprimeable number, because it can be changed into a prime (240534303542161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40089050590351 + ... + 40089050590356.

It is an arithmetic number, because the mean of its divisors is an integer number (80178101180708).

Almost surely, 2^{240534303542121} is an apocalyptic number.

It is an amenable number.

240534303542121 is a deficient number, since it is larger than the sum of its proper divisors (80178101180711).

240534303542121 is an equidigital number, since it uses as much as digits as its factorization.

240534303542121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80178101180710.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 240534303542121 its reverse (121245303435042), we get a palindrome (361779606977163).

The spelling of 240534303542121 in words is "two hundred forty trillion, five hundred thirty-four billion, three hundred three million, five hundred forty-two thousand, one hundred twenty-one".