102000245 has 4 divisors (see below), whose sum is σ = 122400300. Its totient is φ = 81600192.

The previous prime is 102000209. The next prime is 102000247. The reversal of 102000245 is 542000201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54789604 + 47210641 = 7402^2 + 6871^2 .

It is a cyclic number.

It is not a de Polignac number, because 102000245 - 2¹⁰ = 101999221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000247) 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 3 ways as a sum of consecutive naturals, for example, 10200020 + ... + 10200029.

It is an arithmetic number, because the mean of its divisors is an integer number (30600075).

Almost surely, 2^102000245 is an apocalyptic number.

It is an amenable number.

102000245 is a deficient number, since it is larger than the sum of its proper divisors (20400055).

102000245 is an equidigital number, since it uses as much as digits as its factorization.

102000245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20400054.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 102000245 is about 10099.5170676622. The cubic root of 102000245 is about 467.2332469269.

Adding to 102000245 its reverse (542000201), we get a palindrome (644000446).

The spelling of 102000245 in words is "one hundred two million, two hundred forty-five", and thus it is an aban number.