1244002440541 has 6 divisors (see below), whose sum is σ = 1447104879870. Its totient is φ = 1066287806136.

The previous prime is 1244002440539. The next prime is 1244002440557. The reversal of 1244002440541 is 1450442004421.

It can be written as a sum of positive squares in only one way, i.e., 988077748441 + 255924692100 = 994021^2 + 505890^2 .

It is not a de Polignac number, because 1244002440541 - 2¹ = 1244002440539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244002440041) 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 in 5 ways as a sum of consecutive naturals, for example, 12693902406 + ... + 12693902503.

It is an arithmetic number, because the mean of its divisors is an integer number (241184146645).

Almost surely, 2^{1244002440541} is an apocalyptic number.

It is an amenable number.

1244002440541 is a deficient number, since it is larger than the sum of its proper divisors (203102439329).

1244002440541 is an equidigital number, since it uses as much as digits as its factorization.

1244002440541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25387804923 (or 25387804916 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 1244002440541 its reverse (1450442004421), we get a palindrome (2694444444962).

The spelling of 1244002440541 in words is "one trillion, two hundred forty-four billion, two million, four hundred forty thousand, five hundred forty-one".