200102004 has 18 divisors (see below), whose sum is σ = 505813490. Its totient is φ = 66700656.

The previous prime is 200102003. The next prime is 200102011. The reversal of 200102004 is 400201002.

It can be written as a sum of positive squares in only one way, i.e., 165173904 + 34928100 = 12852^2 + 5910^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200102003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2779159 + ... + 2779230.

Almost surely, 2^200102004 is an apocalyptic number.

It is an amenable number.

200102004 is an abundant number, since it is smaller than the sum of its proper divisors (305711486).

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

200102004 is a wasteful number, since it uses less digits than its factorization.

200102004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558399 (or 5558394 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 200102004 is about 14145.7415500213. The cubic root of 200102004 is about 584.9029512470.

Adding to 200102004 its reverse (400201002), we get a palindrome (600303006).

The spelling of 200102004 in words is "two hundred million, one hundred two thousand, four".