1242021012441 has 16 divisors (see below), whose sum is σ = 1806766699968. Its totient is φ = 752660556800.

The previous prime is 1242021012439. The next prime is 1242021012451. The reversal of 1242021012441 is 1442101202421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1242021012441 - 2¹ = 1242021012439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242021012431) 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 15 ways as a sum of consecutive naturals, for example, 1668120 + ... + 2294921.

It is an arithmetic number, because the mean of its divisors is an integer number (112922918748).

Almost surely, 2^{1242021012441} is an apocalyptic number.

1242021012441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1242021012441 is a deficient number, since it is larger than the sum of its proper divisors (564745687527).

1242021012441 is a wasteful number, since it uses less digits than its factorization.

1242021012441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972552.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 1242021012441 its reverse (1442101202421), we get a palindrome (2684122214862).

The spelling of 1242021012441 in words is "one trillion, two hundred forty-two billion, twenty-one million, twelve thousand, four hundred forty-one".