421040155320241 has 4 divisors (see below), whose sum is σ = 421040519395684. Its totient is φ = 421039791244800.

The previous prime is 421040155320203. The next prime is 421040155320247. The reversal of 421040155320241 is 142023551040124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 265151720910400 + 155888434409841 = 16283480^2 + 12485529^2 .

It is a cyclic number.

It is not a de Polignac number, because 421040155320241 - 2¹¹ = 421040155318193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421040155320197 and 421040155320206.

It is not an unprimeable number, because it can be changed into a prime (421040155320247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180297480 + ... + 182617801.

It is an arithmetic number, because the mean of its divisors is an integer number (105260129848921).

Almost surely, 2^{421040155320241} is an apocalyptic number.

It is an amenable number.

421040155320241 is a deficient number, since it is larger than the sum of its proper divisors (364075443).

421040155320241 is a wasteful number, since it uses less digits than its factorization.

421040155320241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364075442.

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 421040155320241 in words is "four hundred twenty-one trillion, forty billion, one hundred fifty-five million, three hundred twenty thousand, two hundred forty-one".