421193 has 4 divisors (see below), whose sum is σ = 431508. Its totient is φ = 410880.

The previous prime is 421189. The next prime is 421207. The reversal of 421193 is 391124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51529 + 369664 = 227^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 421193 - 2² = 421189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421103) 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, 5096 + ... + 5177.

It is an arithmetic number, because the mean of its divisors is an integer number (107877).

2⁴²¹¹⁹³ is an apocalyptic number.

It is an amenable number.

421193 is a deficient number, since it is larger than the sum of its proper divisors (10315).

421193 is a wasteful number, since it uses less digits than its factorization.

421193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10314.

The product of its digits is 216, while the sum is 20.

The square root of 421193 is about 648.9938366425. The cubic root of 421193 is about 74.9595633875.

The spelling of 421193 in words is "four hundred twenty-one thousand, one hundred ninety-three".