102120250 has 32 divisors (see below), whose sum is σ = 201240000. Its totient is φ = 38696400.

The previous prime is 102120203. The next prime is 102120301. The reversal of 102120250 is 52021201.

It is a self number, because there is not a number n which added to its sum of digits gives 102120250.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6000 + ... + 15499.

It is an arithmetic number, because the mean of its divisors is an integer number (6288750).

Almost surely, 2^102120250 is an apocalyptic number.

102120250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102120250 is a deficient number, since it is larger than the sum of its proper divisors (99119750).

102120250 is a wasteful number, since it uses less digits than its factorization.

102120250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21535 (or 21525 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 102120250 is about 10105.4564468905. The cubic root of 102120250 is about 467.4164110325.

Adding to 102120250 its reverse (52021201), we get a palindrome (154141451).

The spelling of 102120250 in words is "one hundred two million, one hundred twenty thousand, two hundred fifty".