421222404 has 48 divisors (see below), whose sum is σ = 1000944000. Its totient is φ = 137846016.

The previous prime is 421222369. The next prime is 421222433. The reversal of 421222404 is 404222124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157809 + ... + 160455.

It is an arithmetic number, because the mean of its divisors is an integer number (20853000).

Almost surely, 2^421222404 is an apocalyptic number.

It is an amenable number.

421222404 is an abundant number, since it is smaller than the sum of its proper divisors (579721596).

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

421222404 is a wasteful number, since it uses less digits than its factorization.

421222404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892 (or 2890 counting only the distinct ones).

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

The square root of 421222404 is about 20523.7034669672. The cubic root of 421222404 is about 749.6130768661.

Adding to 421222404 its reverse (404222124), we get a palindrome (825444528).

The spelling of 421222404 in words is "four hundred twenty-one million, two hundred twenty-two thousand, four hundred four".