421434422 has 16 divisors (see below), whose sum is σ = 642777072. Its totient is φ = 207187200.

The previous prime is 421434413. The next prime is 421434469. The reversal of 421434422 is 224434124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 421434391 and 421434400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77918 + ... + 83150.

It is an arithmetic number, because the mean of its divisors is an integer number (40173567).

Almost surely, 2^421434422 is an apocalyptic number.

421434422 is a deficient number, since it is larger than the sum of its proper divisors (221342650).

421434422 is a wasteful number, since it uses less digits than its factorization.

421434422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903.

The product of its digits is 6144, while the sum is 26.

The square root of 421434422 is about 20528.8680155531. The cubic root of 421434422 is about 749.7388258020.

Adding to 421434422 its reverse (224434124), we get a palindrome (645868546).

The spelling of 421434422 in words is "four hundred twenty-one million, four hundred thirty-four thousand, four hundred twenty-two".