420435422 has 8 divisors (see below), whose sum is σ = 687985272. Its totient is φ = 191107000.

The previous prime is 420435419. The next prime is 420435437. The reversal of 420435422 is 224534024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 420435391 and 420435400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9555329 + ... + 9555372.

It is an arithmetic number, because the mean of its divisors is an integer number (85998159).

Almost surely, 2^420435422 is an apocalyptic number.

420435422 is a deficient number, since it is larger than the sum of its proper divisors (267549850).

420435422 is a wasteful number, since it uses less digits than its factorization.

420435422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19110714.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 420435422 is about 20504.5219890638. The cubic root of 420435422 is about 749.1459445623.

Adding to 420435422 its reverse (224534024), we get a palindrome (644969446).

The spelling of 420435422 in words is "four hundred twenty million, four hundred thirty-five thousand, four hundred twenty-two".