204021402 has 16 divisors (see below), whose sum is σ = 439430880. Its totient is φ = 62775792.

The previous prime is 204021401. The next prime is 204021421. The reversal of 204021402 is 204120402.

It is not an unprimeable number, because it can be changed into a prime (204021401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307752 + ... + 1307907.

It is an arithmetic number, because the mean of its divisors is an integer number (27464430).

Almost surely, 2^204021402 is an apocalyptic number.

204021402 is an abundant number, since it is smaller than the sum of its proper divisors (235409478).

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

204021402 is a wasteful number, since it uses less digits than its factorization.

204021402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615677.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 204021402 is about 14283.6060572952. The cubic root of 204021402 is about 588.6971173331.

Adding to 204021402 its reverse (204120402), we get a palindrome (408141804).

The spelling of 204021402 in words is "two hundred four million, twenty-one thousand, four hundred two".