204402134 has 16 divisors (see below), whose sum is σ = 322217808. Its totient is φ = 97124832.

The previous prime is 204402119. The next prime is 204402139. The reversal of 204402134 is 431204402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204402139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28937 + ... + 35300.

It is an arithmetic number, because the mean of its divisors is an integer number (20138613).

Almost surely, 2^204402134 is an apocalyptic number.

204402134 is a deficient number, since it is larger than the sum of its proper divisors (117815674).

204402134 is a wasteful number, since it uses less digits than its factorization.

204402134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64319.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 204402134 is about 14296.9274321443. The cubic root of 204402134 is about 589.0630863773.

Adding to 204402134 its reverse (431204402), we get a palindrome (635606536).

The spelling of 204402134 in words is "two hundred four million, four hundred two thousand, one hundred thirty-four".