421119891 has 10 divisors (see below), whose sum is σ = 629080452. Its totient is φ = 280746540.

The previous prime is 421119883. The next prime is 421119893. The reversal of 421119891 is 198911124.

It is not a de Polignac number, because 421119891 - 2³ = 421119883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421119893) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2599425 + ... + 2599586.

Almost surely, 2^421119891 is an apocalyptic number.

421119891 is a deficient number, since it is larger than the sum of its proper divisors (207960561).

421119891 is an equidigital number, since it uses as much as digits as its factorization.

421119891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199023 (or 5199014 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The square root of 421119891 is about 20521.2058856199. The cubic root of 421119891 is about 749.5522607593.

The spelling of 421119891 in words is "four hundred twenty-one million, one hundred nineteen thousand, eight hundred ninety-one".