102009202 has 16 divisors (see below), whose sum is σ = 155865024. Its totient is φ = 50058000.

The previous prime is 102009169. The next prime is 102009217. The reversal of 102009202 is 202900201.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 98427 + ... + 99457.

It is an arithmetic number, because the mean of its divisors is an integer number (9741564).

Almost surely, 2^102009202 is an apocalyptic number.

102009202 is a deficient number, since it is larger than the sum of its proper divisors (53855822).

102009202 is a wasteful number, since it uses less digits than its factorization.

102009202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 102009202 is about 10099.9604949722. The cubic root of 102009202 is about 467.2469229911.

Subtracting from 102009202 its sum of digits (16), we obtain a triangular number (102009186 = T₁₄₂₈₃).

Adding to 102009202 its reverse (202900201), we get a palindrome (304909403).

The spelling of 102009202 in words is "one hundred two million, nine thousand, two hundred two".