402144444241 has 2 divisors, whose sum is σ = 402144444242. Its totient is φ = 402144444240.

The previous prime is 402144444187. The next prime is 402144444283. The reversal of 402144444241 is 142444441204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318241528641 + 83902915600 = 564129^2 + 289660^2 .

It is a cyclic number.

It is not a de Polignac number, because 402144444241 - 2²⁹ = 401607573329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402144444197 and 402144444206.

It is not a weakly prime, because it can be changed into another prime (402144444341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072222120 + 201072222121.

It is an arithmetic number, because the mean of its divisors is an integer number (201072222121).

Almost surely, 2^402144444241 is an apocalyptic number.

It is an amenable number.

402144444241 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144444241 is an equidigital number, since it uses as much as digits as its factorization.

402144444241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65536, while the sum is 34.

Adding to 402144444241 its reverse (142444441204), we get a palindrome (544588885445).

The spelling of 402144444241 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, two hundred forty-one".