1242891495107 has 2 divisors, whose sum is σ = 1242891495108. Its totient is φ = 1242891495106.

The previous prime is 1242891495101. The next prime is 1242891495113. The reversal of 1242891495107 is 7015941982421.

It is a balanced prime because it is at equal distance from previous prime (1242891495101) and next prime (1242891495113).

It is a cyclic number.

It is not a de Polignac number, because 1242891495107 - 2⁴ = 1242891495091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242891495101) 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, 621445747553 + 621445747554.

It is an arithmetic number, because the mean of its divisors is an integer number (621445747554).

Almost surely, 2^{1242891495107} is an apocalyptic number.

1242891495107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242891495107 is an equidigital number, since it uses as much as digits as its factorization.

1242891495107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 1242891495107 in words is "one trillion, two hundred forty-two billion, eight hundred ninety-one million, four hundred ninety-five thousand, one hundred seven".