421326055187 has 2 divisors, whose sum is σ = 421326055188. Its totient is φ = 421326055186.

The previous prime is 421326055141. The next prime is 421326055219. The reversal of 421326055187 is 781550623124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421326055187 - 2²⁰ = 421325006611 is a prime.

It is not a weakly prime, because it can be changed into another prime (421326051187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210663027593 + 210663027594.

It is an arithmetic number, because the mean of its divisors is an integer number (210663027594).

Almost surely, 2^421326055187 is an apocalyptic number.

421326055187 is a deficient number, since it is larger than the sum of its proper divisors (1).

421326055187 is an equidigital number, since it uses as much as digits as its factorization.

421326055187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 421326055187 in words is "four hundred twenty-one billion, three hundred twenty-six million, fifty-five thousand, one hundred eighty-seven".