821402002 has 8 divisors (see below), whose sum is σ = 1238986800. Its totient is φ = 408406404.

The previous prime is 821401981. The next prime is 821402047. The reversal of 821402002 is 200204128.

821402002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146852 + ... + 1147567.

It is an arithmetic number, because the mean of its divisors is an integer number (154873350).

Almost surely, 2^821402002 is an apocalyptic number.

821402002 is a deficient number, since it is larger than the sum of its proper divisors (417584798).

821402002 is a wasteful number, since it uses less digits than its factorization.

821402002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294600.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 821402002 is about 28660.1116885472. Note that the first 3 decimals coincide. The cubic root of 821402002 is about 936.5232976420.

The spelling of 821402002 in words is "eight hundred twenty-one million, four hundred two thousand, two".