1240041552403 has 2 divisors, whose sum is σ = 1240041552404. Its totient is φ = 1240041552402.

The previous prime is 1240041552401. The next prime is 1240041552437. The reversal of 1240041552403 is 3042551400421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240041552403 - 2¹ = 1240041552401 is a prime.

Together with 1240041552401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1240041552401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620020776201 + 620020776202.

It is an arithmetic number, because the mean of its divisors is an integer number (620020776202).

Almost surely, 2^{1240041552403} is an apocalyptic number.

1240041552403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240041552403 is an equidigital number, since it uses as much as digits as its factorization.

1240041552403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 1240041552403 its reverse (3042551400421), we get a palindrome (4282592952824).

The spelling of 1240041552403 in words is "one trillion, two hundred forty billion, forty-one million, five hundred fifty-two thousand, four hundred three".