202138005 has 8 divisors (see below), whose sum is σ = 323420832. Its totient is φ = 107806928.

The previous prime is 202138003. The next prime is 202138049. The reversal of 202138005 is 500831202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202138005 - 2¹ = 202138003 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202138003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6737919 + ... + 6737948.

It is an arithmetic number, because the mean of its divisors is an integer number (40427604).

Almost surely, 2^202138005 is an apocalyptic number.

It is an amenable number.

202138005 is a deficient number, since it is larger than the sum of its proper divisors (121282827).

202138005 is a wasteful number, since it uses less digits than its factorization.

202138005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13475875.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 202138005 is about 14217.5245735677. The cubic root of 202138005 is about 586.8800207913.

Adding to 202138005 its reverse (500831202), we get a palindrome (702969207).

The spelling of 202138005 in words is "two hundred two million, one hundred thirty-eight thousand, five".