102143250 has 96 divisors (see below), whose sum is σ = 301377024. Its totient is φ = 24756000.

The previous prime is 102143159. The next prime is 102143257. The reversal of 102143250 is 52341201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102143257) 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 47 ways as a sum of consecutive naturals, for example, 22687 + ... + 26813.

It is an arithmetic number, because the mean of its divisors is an integer number (3139344).

Almost surely, 2^102143250 is an apocalyptic number.

102143250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102143250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150688512).

102143250 is an abundant number, since it is smaller than the sum of its proper divisors (199233774).

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

102143250 is a wasteful number, since it uses less digits than its factorization.

102143250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4161 (or 4148 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 102143250 is about 10106.5943818875. The cubic root of 102143250 is about 467.4514996346.

Adding to 102143250 its reverse (52341201), we get a palindrome (154484451).

The spelling of 102143250 in words is "one hundred two million, one hundred forty-three thousand, two hundred fifty".