102125718 has 32 divisors (see below), whose sum is σ = 234270720. Its totient is φ = 32943240.

The previous prime is 102125717. The next prime is 102125743. The reversal of 102125718 is 817521201.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 102125691 and 102125700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102125717) 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 15 ways as a sum of consecutive naturals, for example, 28830 + ... + 32177.

It is an arithmetic number, because the mean of its divisors is an integer number (7320960).

Almost surely, 2^102125718 is an apocalyptic number.

102125718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102125718 is an abundant number, since it is smaller than the sum of its proper divisors (132145002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102125718 is a wasteful number, since it uses less digits than its factorization.

102125718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61049 (or 61043 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 102125718 is about 10105.7269901774. The cubic root of 102125718 is about 467.4247534436.

Adding to 102125718 its reverse (817521201), we get a palindrome (919646919).

The spelling of 102125718 in words is "one hundred two million, one hundred twenty-five thousand, seven hundred eighteen".