102020200 has 24 divisors (see below), whose sum is σ = 237197430. Its totient is φ = 40808000.

The previous prime is 102020189. The next prime is 102020227. The reversal of 102020200 is 2020201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 51638596 + 50381604 = 7186^2 + 7098^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254851 + ... + 255250.

Almost surely, 2^102020200 is an apocalyptic number.

102020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020200 is an abundant number, since it is smaller than the sum of its proper divisors (135177230).

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

102020200 is a wasteful number, since it uses less digits than its factorization.

102020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510117 (or 510108 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 102020200 is about 10100.5049378732. The cubic root of 102020200 is about 467.2637142769.

Adding to 102020200 its reverse (2020201), we get a palindrome (104040401).

Subtracting from 102020200 its reverse (2020201), we obtain a palindrome (99999999).

The spelling of 102020200 in words is "one hundred two million, twenty thousand, two hundred".