102820901 has 8 divisors (see below), whose sum is σ = 105745824. Its totient is φ = 99932560.

The previous prime is 102820897. The next prime is 102820909. The reversal of 102820901 is 109028201.

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

It is not a de Polignac number, because 102820901 - 2² = 102820897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102820909) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3395 + ... + 14736.

It is an arithmetic number, because the mean of its divisors is an integer number (13218228).

Almost surely, 2^102820901 is an apocalyptic number.

It is an amenable number.

102820901 is a deficient number, since it is larger than the sum of its proper divisors (2924923).

102820901 is a wasteful number, since it uses less digits than its factorization.

102820901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18291.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 102820901 is about 10140.0641516708. The cubic root of 102820901 is about 468.4829629019.

The spelling of 102820901 in words is "one hundred two million, eight hundred twenty thousand, nine hundred one".