20040421340141 has 16 divisors (see below), whose sum is σ = 21296026632240. Its totient is φ = 18822661724160.

The previous prime is 20040421340111. The next prime is 20040421340143. The reversal of 20040421340141 is 14104312404002.

It can be written as a sum of positive squares in 8 ways, for example, as 216145957225 + 19824275382916 = 464915^2 + 4452446^2 .

It is a cyclic number.

It is not a de Polignac number, because 20040421340141 - 2¹⁰ = 20040421339117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20040421340141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040421340143) 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 15 ways as a sum of consecutive naturals, for example, 3527645 + ... + 7247421.

It is an arithmetic number, because the mean of its divisors is an integer number (1331001664515).

Almost surely, 2^{20040421340141} is an apocalyptic number.

It is an amenable number.

20040421340141 is a deficient number, since it is larger than the sum of its proper divisors (1255605292099).

20040421340141 is a wasteful number, since it uses less digits than its factorization.

20040421340141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724864.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20040421340141 its reverse (14104312404002), we get a palindrome (34144733744143).

The spelling of 20040421340141 in words is "twenty trillion, forty billion, four hundred twenty-one million, three hundred forty thousand, one hundred forty-one".