102102985 has 8 divisors (see below), whose sum is σ = 122980680. Its totient is φ = 81377664.

The previous prime is 102102977. The next prime is 102103007. The reversal of 102102985 is 589201201.

It can be written as a sum of positive squares in 4 ways, for example, as 4112784 + 97990201 = 2028^2 + 9899^2 .

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 102102985 - 2³ = 102102977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36612 + ... + 39301.

It is an arithmetic number, because the mean of its divisors is an integer number (15372585).

Almost surely, 2^102102985 is an apocalyptic number.

It is an amenable number.

102102985 is a deficient number, since it is larger than the sum of its proper divisors (20877695).

102102985 is an equidigital number, since it uses as much as digits as its factorization.

102102985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76187.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 102102985 is about 10104.6021693088. The cubic root of 102102985 is about 467.3900682351.

The spelling of 102102985 in words is "one hundred two million, one hundred two thousand, nine hundred eighty-five".