1242668719295 has 32 divisors (see below), whose sum is σ = 1605905049600. Its totient is φ = 920151657216.

The previous prime is 1242668719283. The next prime is 1242668719301. The reversal of 1242668719295 is 5929178662421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242668719295 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2296022 + ... + 2785148.

It is an arithmetic number, because the mean of its divisors is an integer number (50184532800).

Almost surely, 2^{1242668719295} is an apocalyptic number.

1242668719295 is a deficient number, since it is larger than the sum of its proper divisors (363236330305).

1242668719295 is a wasteful number, since it uses less digits than its factorization.

1242668719295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489767.

The product of its digits is 26127360, while the sum is 62.

The spelling of 1242668719295 in words is "one trillion, two hundred forty-two billion, six hundred sixty-eight million, seven hundred nineteen thousand, two hundred ninety-five".