1242013321127 has 2 divisors, whose sum is σ = 1242013321128. Its totient is φ = 1242013321126.

The previous prime is 1242013321099. The next prime is 1242013321141. The reversal of 1242013321127 is 7211233102421.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7211233102421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242013321127 - 2⁶ = 1242013321063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242013321127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242013321147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621006660563 + 621006660564.

It is an arithmetic number, because the mean of its divisors is an integer number (621006660564).

Almost surely, 2^{1242013321127} is an apocalyptic number.

1242013321127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242013321127 is an equidigital number, since it uses as much as digits as its factorization.

1242013321127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 1242013321127 its reverse (7211233102421), we get a palindrome (8453246423548).

The spelling of 1242013321127 in words is "one trillion, two hundred forty-two billion, thirteen million, three hundred twenty-one thousand, one hundred twenty-seven".