102117250 has 16 divisors (see below), whose sum is σ = 191163960. Its totient is φ = 40846800.

The previous prime is 102117247. The next prime is 102117277. The reversal of 102117250 is 52711201.

It can be written as a sum of positive squares in 4 ways, for example, as 15124321 + 86992929 = 3889^2 + 9327^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203985 + ... + 204484.

Almost surely, 2^102117250 is an apocalyptic number.

102117250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102117250 is a deficient number, since it is larger than the sum of its proper divisors (89046710).

102117250 is an equidigital number, since it uses as much as digits as its factorization.

102117250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408486 (or 408476 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 102117250 is about 10105.3080111395. The cubic root of 102117250 is about 467.4118338699.

Adding to 102117250 its reverse (52711201), we get a palindrome (154828451).

The spelling of 102117250 in words is "one hundred two million, one hundred seventeen thousand, two hundred fifty".