1242513040121 has 8 divisors (see below), whose sum is σ = 1271305118304. Its totient is φ = 1214039106720.

The previous prime is 1242513040063. The next prime is 1242513040123. The reversal of 1242513040121 is 1210403152421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242513040121 - 2³⁸ = 967635133177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242513040123) 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 7 ways as a sum of consecutive naturals, for example, 79528295 + ... + 79543916.

It is an arithmetic number, because the mean of its divisors is an integer number (158913139788).

Almost surely, 2^{1242513040121} is an apocalyptic number.

It is an amenable number.

1242513040121 is a deficient number, since it is larger than the sum of its proper divisors (28792078183).

1242513040121 is a wasteful number, since it uses less digits than its factorization.

1242513040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159072391.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 1242513040121 its reverse (1210403152421), we get a palindrome (2452916192542).

The spelling of 1242513040121 in words is "one trillion, two hundred forty-two billion, five hundred thirteen million, forty thousand, one hundred twenty-one".