401243314244243 has 2 divisors, whose sum is σ = 401243314244244. Its totient is φ = 401243314244242.

The previous prime is 401243314244237. The next prime is 401243314244347. The reversal of 401243314244243 is 342442413342104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401243314244243 - 2¹⁸ = 401243313982099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401243314244243.

It is not a weakly prime, because it can be changed into another prime (401243314244543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200621657122121 + 200621657122122.

It is an arithmetic number, because the mean of its divisors is an integer number (200621657122122).

Almost surely, 2^{401243314244243} is an apocalyptic number.

401243314244243 is a deficient number, since it is larger than the sum of its proper divisors (1).

401243314244243 is an equidigital number, since it uses as much as digits as its factorization.

401243314244243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 41.

Adding to 401243314244243 its reverse (342442413342104), we get a palindrome (743685727586347).

The spelling of 401243314244243 in words is "four hundred one trillion, two hundred forty-three billion, three hundred fourteen million, two hundred forty-four thousand, two hundred forty-three".