1240041552437 has 2 divisors, whose sum is σ = 1240041552438. Its totient is φ = 1240041552436.

The previous prime is 1240041552403. The next prime is 1240041552467. The reversal of 1240041552437 is 7342551400421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1126115726596 + 113925825841 = 1061186^2 + 337529^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240041552437 - 2¹² = 1240041548341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240041552437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240041552467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620020776218 + 620020776219.

It is an arithmetic number, because the mean of its divisors is an integer number (620020776219).

Almost surely, 2^{1240041552437} is an apocalyptic number.

It is an amenable number.

1240041552437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240041552437 is an equidigital number, since it uses as much as digits as its factorization.

1240041552437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 38.

Adding to 1240041552437 its reverse (7342551400421), we get a palindrome (8582592952858).

The spelling of 1240041552437 in words is "one trillion, two hundred forty billion, forty-one million, five hundred fifty-two thousand, four hundred thirty-seven".