421142183191 has 2 divisors, whose sum is σ = 421142183192. Its totient is φ = 421142183190.

The previous prime is 421142183177. The next prime is 421142183207. The reversal of 421142183191 is 191381241124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421142183191 - 2⁹ = 421142182679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421142183191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421142183141) 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, 210571091595 + 210571091596.

It is an arithmetic number, because the mean of its divisors is an integer number (210571091596).

Almost surely, 2^421142183191 is an apocalyptic number.

421142183191 is a deficient number, since it is larger than the sum of its proper divisors (1).

421142183191 is an equidigital number, since it uses as much as digits as its factorization.

421142183191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 37.

The spelling of 421142183191 in words is "four hundred twenty-one billion, one hundred forty-two million, one hundred eighty-three thousand, one hundred ninety-one".