421322008 has 16 divisors (see below), whose sum is σ = 790209000. Its totient is φ = 210599616.

The previous prime is 421322003. The next prime is 421322021. The reversal of 421322008 is 800223124.

It is a self number, because there is not a number n which added to its sum of digits gives 421322008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421322003) 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, 36348 + ... + 46516.

Almost surely, 2^421322008 is an apocalyptic number.

It is an amenable number.

421322008 is a deficient number, since it is larger than the sum of its proper divisors (368886992).

421322008 is a wasteful number, since it uses less digits than its factorization.

421322008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15354 (or 15350 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 421322008 is about 20526.1298836386. The cubic root of 421322008 is about 749.6721577505.

The spelling of 421322008 in words is "four hundred twenty-one million, three hundred twenty-two thousand, eight".