1242660521303 has 2 divisors, whose sum is σ = 1242660521304. Its totient is φ = 1242660521302.

The previous prime is 1242660521299. The next prime is 1242660521309. The reversal of 1242660521303 is 3031250662421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242660521303 - 2² = 1242660521299 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242660521309) 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 as a sum of consecutive naturals, namely, 621330260651 + 621330260652.

It is an arithmetic number, because the mean of its divisors is an integer number (621330260652).

Almost surely, 2^{1242660521303} is an apocalyptic number.

1242660521303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242660521303 is an equidigital number, since it uses as much as digits as its factorization.

1242660521303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 1242660521303 in words is "one trillion, two hundred forty-two billion, six hundred sixty million, five hundred twenty-one thousand, three hundred three".