102040188 has 24 divisors (see below), whose sum is σ = 252099792. Its totient is φ = 32012544.

The previous prime is 102040187. The next prime is 102040201. The reversal of 102040188 is 881040201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102040181) 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 7 ways as a sum of consecutive naturals, for example, 249895 + ... + 250302.

It is an arithmetic number, because the mean of its divisors is an integer number (10504158).

Almost surely, 2^102040188 is an apocalyptic number.

It is an amenable number.

102040188 is an abundant number, since it is smaller than the sum of its proper divisors (150059604).

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

102040188 is a wasteful number, since it uses less digits than its factorization.

102040188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500221 (or 500219 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 102040188 is about 10101.4943448977. The cubic root of 102040188 is about 467.2942280289.

Adding to 102040188 its reverse (881040201), we get a palindrome (983080389).

The spelling of 102040188 in words is "one hundred two million, forty thousand, one hundred eighty-eight".