421036816 has 20 divisors (see below), whose sum is σ = 827250624. Its totient is φ = 207552800.

The previous prime is 421036793. The next prime is 421036817. The reversal of 421036816 is 618630124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (421036817) 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, 184180 + ... + 186451.

Almost surely, 2^421036816 is an apocalyptic number.

It is an amenable number.

421036816 is a deficient number, since it is larger than the sum of its proper divisors (406213808).

421036816 is a wasteful number, since it uses less digits than its factorization.

421036816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370710 (or 370704 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 421036816 is about 20519.1816600955. The cubic root of 421036816 is about 749.5029690568.

The spelling of 421036816 in words is "four hundred twenty-one million, thirty-six thousand, eight hundred sixteen".