421351 has 6 divisors (see below), whose sum is σ = 490200. Its totient is φ = 361116.

The previous prime is 421349. The next prime is 421361. The reversal of 421351 is 153124.

It is not a de Polignac number, because 421351 - 2¹ = 421349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4251 + ... + 4348.

It is an arithmetic number, because the mean of its divisors is an integer number (81700).

2⁴²¹³⁵¹ is an apocalyptic number.

421351 is a deficient number, since it is larger than the sum of its proper divisors (68849).

421351 is an equidigital number, since it uses as much as digits as its factorization.

421351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8613 (or 8606 counting only the distinct ones).

The product of its digits is 120, while the sum is 16.

The square root of 421351 is about 649.1155521169. The cubic root of 421351 is about 74.9689352830.

Adding to 421351 its reverse (153124), we get a palindrome (574475).

The spelling of 421351 in words is "four hundred twenty-one thousand, three hundred fifty-one".