102125566 has 12 divisors (see below), whose sum is σ = 160139952. Its totient is φ = 48842156.

The previous prime is 102125561. The next prime is 102125593. The reversal of 102125566 is 665521201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102125561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47206 + ... + 49321.

It is an arithmetic number, because the mean of its divisors is an integer number (13344996).

Almost surely, 2^102125566 is an apocalyptic number.

102125566 is a deficient number, since it is larger than the sum of its proper divisors (58014386).

102125566 is an equidigital number, since it uses as much as digits as its factorization.

102125566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96575 (or 96552 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 102125566 is about 10105.7194696865. The cubic root of 102125566 is about 467.4245215444.

Adding to 102125566 its reverse (665521201), we get a palindrome (767646767).

The spelling of 102125566 in words is "one hundred two million, one hundred twenty-five thousand, five hundred sixty-six".