204142124101 has 4 divisors (see below), whose sum is σ = 204143845600. Its totient is φ = 204140402604.

The previous prime is 204142124093. The next prime is 204142124117. The reversal of 204142124101 is 101421241402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204142124101 - 2³ = 204142124093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204142124191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668571 + ... + 924808.

It is an arithmetic number, because the mean of its divisors is an integer number (51035961400).

Almost surely, 2^204142124101 is an apocalyptic number.

It is an amenable number.

204142124101 is a deficient number, since it is larger than the sum of its proper divisors (1721499).

204142124101 is a wasteful number, since it uses less digits than its factorization.

204142124101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721498.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 204142124101 its reverse (101421241402), we get a palindrome (305563365503).

The spelling of 204142124101 in words is "two hundred four billion, one hundred forty-two million, one hundred twenty-four thousand, one hundred one".