421058191 has 2 divisors, whose sum is σ = 421058192. Its totient is φ = 421058190.

The previous prime is 421058179. The next prime is 421058201. The reversal of 421058191 is 191850124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421058191 - 2¹¹ = 421056143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421058291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210529095 + 210529096.

It is an arithmetic number, because the mean of its divisors is an integer number (210529096).

Almost surely, 2^421058191 is an apocalyptic number.

421058191 is a deficient number, since it is larger than the sum of its proper divisors (1).

421058191 is an equidigital number, since it uses as much as digits as its factorization.

421058191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 421058191 is about 20519.7025075901. The cubic root of 421058191 is about 749.5156523141.

The spelling of 421058191 in words is "four hundred twenty-one million, fifty-eight thousand, one hundred ninety-one".