102040556250 has 96 divisors (see below), whose sum is σ = 256429587456. Its totient is φ = 27067400000.

The previous prime is 102040556221. The next prime is 102040556251. The reversal of 102040556250 is 52655040201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (102040556251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3567004 + ... + 3595496.

It is an arithmetic number, because the mean of its divisors is an integer number (2671141536).

Almost surely, 2^102040556250 is an apocalyptic number.

102040556250 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 102040556250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128214793728).

102040556250 is an abundant number, since it is smaller than the sum of its proper divisors (154389031206).

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

102040556250 is an equidigital number, since it uses as much as digits as its factorization.

102040556250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28714 (or 28694 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 102040556250 its reverse (52655040201), we get a palindrome (154695596451).

The spelling of 102040556250 in words is "one hundred two billion, forty million, five hundred fifty-six thousand, two hundred fifty".