434421 has 24 divisors (see below), whose sum is σ = 698880. Its totient is φ = 258336.

The previous prime is 434411. The next prime is 434431. The reversal of 434421 is 124434.

It is an interprime number because it is at equal distance from previous prime (434411) and next prime (434431).

It is not a de Polignac number, because 434421 - 2⁵ = 434389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 434394 and 434403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5460 + ... + 5538.

It is an arithmetic number, because the mean of its divisors is an integer number (29120).

2⁴³⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

434421 is a deficient number, since it is larger than the sum of its proper divisors (264459).

434421 is a wasteful number, since it uses less digits than its factorization.

434421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 142 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 434421 is about 659.1062129885. The cubic root of 434421 is about 75.7362161634.

Adding to 434421 its reverse (124434), we get a palindrome (558855).

The spelling of 434421 in words is "four hundred thirty-four thousand, four hundred twenty-one".