1240143421441 has 2 divisors, whose sum is σ = 1240143421442. Its totient is φ = 1240143421440.

The previous prime is 1240143421411. The next prime is 1240143421457. The reversal of 1240143421441 is 1441243410421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656592572416 + 583550849025 = 810304^2 + 763905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240143421441 - 2³⁵ = 1205783683073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240143421411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620071710720 + 620071710721.

It is an arithmetic number, because the mean of its divisors is an integer number (620071710721).

Almost surely, 2^{1240143421441} is an apocalyptic number.

It is an amenable number.

1240143421441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240143421441 is an equidigital number, since it uses as much as digits as its factorization.

1240143421441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 1240143421441 its reverse (1441243410421), we get a palindrome (2681386831862).

The spelling of 1240143421441 in words is "one trillion, two hundred forty billion, one hundred forty-three million, four hundred twenty-one thousand, four hundred forty-one".