434420421 has 4 divisors (see below), whose sum is σ = 579227232. Its totient is φ = 289613612.

The previous prime is 434420381. The next prime is 434420449. The reversal of 434420421 is 124024434.

It is a happy number.

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 434420421 - 2¹⁰ = 434419397 is a prime.

It is a super-2 number, since 2×434420421² = 377442204363634482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 434420391 and 434420400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434420491) 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, 72403401 + ... + 72403406.

It is an arithmetic number, because the mean of its divisors is an integer number (144806808).

Almost surely, 2^434420421 is an apocalyptic number.

It is an amenable number.

434420421 is a deficient number, since it is larger than the sum of its proper divisors (144806811).

434420421 is a wasteful number, since it uses less digits than its factorization.

434420421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144806810.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 434420421 is about 20842.7546404020. The cubic root of 434420421 is about 757.3618251604.

Adding to 434420421 its reverse (124024434), we get a palindrome (558444855).

The spelling of 434420421 in words is "four hundred thirty-four million, four hundred twenty thousand, four hundred twenty-one".