102243125 has 20 divisors (see below), whose sum is σ = 132192060. Its totient is φ = 78960000.

The previous prime is 102243109. The next prime is 102243131. The reversal of 102243125 is 521342201.

It can be written as a sum of positive squares in 10 ways, for example, as 44209201 + 58033924 = 6649^2 + 7618^2 .

It is not a de Polignac number, because 102243125 - 2⁴ = 102243109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102243097 and 102243106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15305 + ... + 20945.

It is an arithmetic number, because the mean of its divisors is an integer number (6609603).

Almost surely, 2^102243125 is an apocalyptic number.

It is an amenable number.

102243125 is a deficient number, since it is larger than the sum of its proper divisors (29948935).

102243125 is an frugal number, since it uses more digits than its factorization.

102243125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690 (or 5675 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 102243125 is about 10111.5342554926. The cubic root of 102243125 is about 467.6038070073.

Adding to 102243125 its reverse (521342201), we get a palindrome (623585326).

The spelling of 102243125 in words is "one hundred two million, two hundred forty-three thousand, one hundred twenty-five".