204142137 has 32 divisors (see below), whose sum is σ = 305233920. Its totient is φ = 120602880.

The previous prime is 204142129. The next prime is 204142139. The reversal of 204142137 is 731241402.

It is a happy number.

It is not a de Polignac number, because 204142137 - 2³ = 204142129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204142139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184528 + ... + 185630.

It is an arithmetic number, because the mean of its divisors is an integer number (9538560).

Almost surely, 2^204142137 is an apocalyptic number.

It is an amenable number.

204142137 is a deficient number, since it is larger than the sum of its proper divisors (101091783).

204142137 is a wasteful number, since it uses less digits than its factorization.

204142137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 204142137 is about 14287.8317809246. The cubic root of 204142137 is about 588.8132200719.

Adding to 204142137 its reverse (731241402), we get a palindrome (935383539).

The spelling of 204142137 in words is "two hundred four million, one hundred forty-two thousand, one hundred thirty-seven".