1242241440440 has 128 divisors (see below), whose sum is σ = 3752785451520. Its totient is φ = 357408115200.

The previous prime is 1242241440403. The next prime is 1242241440449. The reversal of 1242241440440 is 440441422421.

It is a junction number, because it is equal to n+sod(n) for n = 1242241440397 and 1242241440406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242241440449) 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 31 ways as a sum of consecutive naturals, for example, 15472466 + ... + 15552545.

It is an arithmetic number, because the mean of its divisors is an integer number (29318636340).

Almost surely, 2^{1242241440440} is an apocalyptic number.

1242241440440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242241440440 is an abundant number, since it is smaller than the sum of its proper divisors (2510544011080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242241440440 is a wasteful number, since it uses less digits than its factorization.

1242241440440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31025053 (or 31025049 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 1242241440440 its reverse (440441422421), we get a palindrome (1682682862861).

The spelling of 1242241440440 in words is "one trillion, two hundred forty-two billion, two hundred forty-one million, four hundred forty thousand, four hundred forty".