420421422 has 8 divisors (see below), whose sum is σ = 840842856. Its totient is φ = 140140472.

The previous prime is 420421409. The next prime is 420421423. The reversal of 420421422 is 224124024.

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

420421422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420421423) 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, 35035113 + ... + 35035124.

It is an arithmetic number, because the mean of its divisors is an integer number (105105357).

Almost surely, 2^420421422 is an apocalyptic number.

420421422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420421422 is a wasteful number, since it uses less digits than its factorization.

420421422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70070242.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 420421422 is about 20504.1805981122. The cubic root of 420421422 is about 749.1376292467.

Adding to 420421422 its reverse (224124024), we get a palindrome (644545446).

The spelling of 420421422 in words is "four hundred twenty million, four hundred twenty-one thousand, four hundred twenty-two".