421300193 has 4 divisors (see below), whose sum is σ = 422655168. Its totient is φ = 419945220.

The previous prime is 421300169. The next prime is 421300247. The reversal of 421300193 is 391003124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421300193 - 2²⁰ = 420251617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421300163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677021 + ... + 677642.

It is an arithmetic number, because the mean of its divisors is an integer number (105663792).

Almost surely, 2^421300193 is an apocalyptic number.

It is an amenable number.

421300193 is a deficient number, since it is larger than the sum of its proper divisors (1354975).

421300193 is a wasteful number, since it uses less digits than its factorization.

421300193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354974.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 421300193 is about 20525.5984809213. The cubic root of 421300193 is about 749.6592188107.

The spelling of 421300193 in words is "four hundred twenty-one million, three hundred thousand, one hundred ninety-three".