1240541521144 has 64 divisors (see below), whose sum is σ = 2424525696000. Its totient is φ = 594397459200.

The previous prime is 1240541521117. The next prime is 1240541521147. The reversal of 1240541521144 is 4411251450421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240541521147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71612004 + ... + 71629324.

It is an arithmetic number, because the mean of its divisors is an integer number (37883214000).

Almost surely, 2^{1240541521144} is an apocalyptic number.

It is an amenable number.

1240541521144 is a deficient number, since it is larger than the sum of its proper divisors (1183984174856).

1240541521144 is a wasteful number, since it uses less digits than its factorization.

1240541521144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20164 (or 20160 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

Adding to 1240541521144 its reverse (4411251450421), we get a palindrome (5651792971565).

The spelling of 1240541521144 in words is "one trillion, two hundred forty billion, five hundred forty-one million, five hundred twenty-one thousand, one hundred forty-four".