102137250 has 128 divisors (see below), whose sum is σ = 276037632. Its totient is φ = 25080000.

The previous prime is 102137249. The next prime is 102137257. The reversal of 102137250 is 52731201.

It is not an unprimeable number, because it can be changed into a prime (102137257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 534655 + ... + 534845.

It is an arithmetic number, because the mean of its divisors is an integer number (2156544).

Almost surely, 2^102137250 is an apocalyptic number.

102137250 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 102137250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138018816).

102137250 is an abundant number, since it is smaller than the sum of its proper divisors (173900382).

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

102137250 is a wasteful number, since it uses less digits than its factorization.

102137250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 102137250 is about 10106.2975416321. The cubic root of 102137250 is about 467.4423465941.

Adding to 102137250 its reverse (52731201), we get a palindrome (154868451).

The spelling of 102137250 in words is "one hundred two million, one hundred thirty-seven thousand, two hundred fifty".