102020210 has 8 divisors (see below), whose sum is σ = 183636396. Its totient is φ = 40808080.

The previous prime is 102020189. The next prime is 102020227. The reversal of 102020210 is 12020201.

It can be written as a sum of positive squares in 2 ways, for example, as 94692361 + 7327849 = 9731^2 + 2707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101001 + ... + 5101020.

Almost surely, 2^102020210 is an apocalyptic number.

102020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102020210 is a deficient number, since it is larger than the sum of its proper divisors (81616186).

102020210 is a wasteful number, since it uses less digits than its factorization.

102020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202028.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 102020210 is about 10100.5054328979. The cubic root of 102020210 is about 467.2637295439.

Adding to 102020210 its reverse (12020201), we get a palindrome (114040411).

Subtracting from 102020210 its reverse (12020201), we obtain a palindrome (90000009).

The spelling of 102020210 in words is "one hundred two million, twenty thousand, two hundred ten".