82421803 has 8 divisors (see below), whose sum is σ = 83512080. Its totient is φ = 81338880.

The previous prime is 82421783. The next prime is 82421813. The reversal of 82421803 is 30812428.

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

It is a cyclic number.

It is not a de Polignac number, because 82421803 - 2⁹ = 82421291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82421813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22843 + ... + 26203.

It is an arithmetic number, because the mean of its divisors is an integer number (10439010).

Almost surely, 2^82421803 is an apocalyptic number.

82421803 is a deficient number, since it is larger than the sum of its proper divisors (1090277).

82421803 is a wasteful number, since it uses less digits than its factorization.

82421803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 82421803 is about 9078.6454386103. The cubic root of 82421803 is about 435.1917998602.

The spelling of 82421803 in words is "eighty-two million, four hundred twenty-one thousand, eight hundred three".