102135186 has 12 divisors (see below), whose sum is σ = 221292942. Its totient is φ = 34045056.

The previous prime is 102135119. The next prime is 102135193. The reversal of 102135186 is 681531201.

It can be written as a sum of positive squares in only one way, i.e., 64496961 + 37638225 = 8031^2 + 6135^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2837071 + ... + 2837106.

Almost surely, 2^102135186 is an apocalyptic number.

102135186 is an abundant number, since it is smaller than the sum of its proper divisors (119157756).

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

102135186 is a wasteful number, since it uses less digits than its factorization.

102135186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674185 (or 5674182 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 102135186 is about 10106.1954265688. The cubic root of 102135186 is about 467.4391978653.

Adding to 102135186 its reverse (681531201), we get a palindrome (783666387).

The spelling of 102135186 in words is "one hundred two million, one hundred thirty-five thousand, one hundred eighty-six".