204000142 has 4 divisors (see below), whose sum is σ = 306000216. Its totient is φ = 102000070.

The previous prime is 204000107. The next prime is 204000191. The reversal of 204000142 is 241000402.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 51000034 + ... + 51000037.

It is an arithmetic number, because the mean of its divisors is an integer number (76500054).

Almost surely, 2^204000142 is an apocalyptic number.

204000142 is a deficient number, since it is larger than the sum of its proper divisors (102000074).

204000142 is a wasteful number, since it uses less digits than its factorization.

204000142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102000073.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 204000142 is about 14282.8618280791. The cubic root of 204000142 is about 588.6766682766.

Adding to 204000142 its reverse (241000402), we get a palindrome (445000544).

The spelling of 204000142 in words is "two hundred four million, one hundred forty-two", and thus it is an aban number.