1242030023987 has 2 divisors, whose sum is σ = 1242030023988. Its totient is φ = 1242030023986.

The previous prime is 1242030023963. The next prime is 1242030024023. The reversal of 1242030023987 is 7893200302421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242030023987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242030023957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621015011993 + 621015011994.

It is an arithmetic number, because the mean of its divisors is an integer number (621015011994).

Almost surely, 2^{1242030023987} is an apocalyptic number.

1242030023987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242030023987 is an equidigital number, since it uses as much as digits as its factorization.

1242030023987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 1242030023987 in words is "one trillion, two hundred forty-two billion, thirty million, twenty-three thousand, nine hundred eighty-seven".