421253 has 6 divisors (see below), whose sum is σ = 490086. Its totient is φ = 361032.

The previous prime is 421241. The next prime is 421273. The reversal of 421253 is 352124.

It can be written as a sum of positive squares in only one way, i.e., 388129 + 33124 = 623^2 + 182^2 .

It is not a de Polignac number, because 421253 - 2⁶ = 421189 is a prime.

It is a super-3 number, since 3×421253³ = 224259203335683831, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4250 + ... + 4347.

It is an arithmetic number, because the mean of its divisors is an integer number (81681).

2⁴²¹²⁵³ is an apocalyptic number.

It is an amenable number.

421253 is a deficient number, since it is larger than the sum of its proper divisors (68833).

421253 is an equidigital number, since it uses as much as digits as its factorization.

421253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611 (or 8604 counting only the distinct ones).

The product of its digits is 240, while the sum is 17.

The square root of 421253 is about 649.0400603969. The cubic root of 421253 is about 74.9631226112.

Adding to 421253 its reverse (352124), we get a palindrome (773377).

The spelling of 421253 in words is "four hundred twenty-one thousand, two hundred fifty-three".