421243100002987 has 2 divisors, whose sum is σ = 421243100002988. Its totient is φ = 421243100002986.

The previous prime is 421243100002853. The next prime is 421243100003029. The reversal of 421243100002987 is 789200001342124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421243100002987 - 2¹⁹ = 421243099478699 is a prime.

It is not a weakly prime, because it can be changed into another prime (421243100006987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210621550001493 + 210621550001494.

It is an arithmetic number, because the mean of its divisors is an integer number (210621550001494).

Almost surely, 2^{421243100002987} is an apocalyptic number.

421243100002987 is a deficient number, since it is larger than the sum of its proper divisors (1).

421243100002987 is an equidigital number, since it uses as much as digits as its factorization.

421243100002987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 421243100002987 in words is "four hundred twenty-one trillion, two hundred forty-three billion, one hundred million, two thousand, nine hundred eighty-seven".