1242124113305 has 8 divisors (see below), whose sum is σ = 1500552621000. Its totient is φ = 987030167296.

The previous prime is 1242124113229. The next prime is 1242124113361. The reversal of 1242124113305 is 5033114212421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9839846416 + 1232284266889 = 99196^2 + 1110083^2 .

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 1242124113305 - 2¹² = 1242124109209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833639600 + ... + 833641089.

It is an arithmetic number, because the mean of its divisors is an integer number (187569077625).

Almost surely, 2^{1242124113305} is an apocalyptic number.

It is an amenable number.

1242124113305 is a deficient number, since it is larger than the sum of its proper divisors (258428507695).

1242124113305 is a wasteful number, since it uses less digits than its factorization.

1242124113305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667280843.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1242124113305 its reverse (5033114212421), we get a palindrome (6275238325726).

The spelling of 1242124113305 in words is "one trillion, two hundred forty-two billion, one hundred twenty-four million, one hundred thirteen thousand, three hundred five".