138002101 has 4 divisors (see below), whose sum is σ = 138126112. Its totient is φ = 137878092.

The previous prime is 138002087. The next prime is 138002129. The reversal of 138002101 is 101200831.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101200831 = 167 ⋅605993.

It is a cyclic number.

It is not a de Polignac number, because 138002101 - 2⁷ = 138001973 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 (138002131) 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, 60321 + ... + 62566.

It is an arithmetic number, because the mean of its divisors is an integer number (34531528).

Almost surely, 2^138002101 is an apocalyptic number.

It is an amenable number.

138002101 is a deficient number, since it is larger than the sum of its proper divisors (124011).

138002101 is a wasteful number, since it uses less digits than its factorization.

138002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124010.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 138002101 is about 11747.4295486289. The cubic root of 138002101 is about 516.7675477426.

Adding to 138002101 its reverse (101200831), we get a palindrome (239202932).

The spelling of 138002101 in words is "one hundred thirty-eight million, two thousand, one hundred one".