4140243304381 has 2 divisors, whose sum is σ = 4140243304382. Its totient is φ = 4140243304380.

The previous prime is 4140243304283. The next prime is 4140243304397. The reversal of 4140243304381 is 1834033420414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3940657741881 + 199585562500 = 1985109^2 + 446750^2 .

It is a cyclic number.

It is not a de Polignac number, because 4140243304381 - 2²⁹ = 4139706433469 is a prime.

It is a super-2 number, since 2×4140243304381² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4140243304381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4140243302381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2070121652190 + 2070121652191.

It is an arithmetic number, because the mean of its divisors is an integer number (2070121652191).

Almost surely, 2^{4140243304381} is an apocalyptic number.

It is an amenable number.

4140243304381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4140243304381 is an equidigital number, since it uses as much as digits as its factorization.

4140243304381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 4140243304381 its reverse (1834033420414), we get a palindrome (5974276724795).

The spelling of 4140243304381 in words is "four trillion, one hundred forty billion, two hundred forty-three million, three hundred four thousand, three hundred eighty-one".