810102 has 8 divisors (see below), whose sum is σ = 1620216. Its totient is φ = 270032.

The previous prime is 810091. The next prime is 810109. The reversal of 810102 is 201018.

It is a happy number.

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

810102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810109) by changing a digit.

810102 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 67503 + ... + 67514.

It is an arithmetic number, because the mean of its divisors is an integer number (202527).

2⁸¹⁰¹⁰² is an apocalyptic number.

810102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

810102 is a wasteful number, since it uses less digits than its factorization.

810102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135022.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 810102 is about 900.0566648828. The cubic root of 810102 is about 93.2208878257.

The spelling of 810102 in words is "eight hundred ten thousand, one hundred two".