138701 has 4 divisors (see below), whose sum is σ = 141372. Its totient is φ = 136032.

The previous prime is 138683. The next prime is 138727. The reversal of 138701 is 107831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 107831 = 17 ⋅6343.

It can be written as a sum of positive squares in 2 ways, for example, as 121801 + 16900 = 349^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 138701 - 2⁶ = 138637 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 (138731) 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, 1256 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (35343).

2¹³⁸⁷⁰¹ is an apocalyptic number.

It is an amenable number.

138701 is a deficient number, since it is larger than the sum of its proper divisors (2671).

138701 is an equidigital number, since it uses as much as digits as its factorization.

138701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 138701 is about 372.4258315423. The cubic root of 138701 is about 51.7638453157.

The spelling of 138701 in words is "one hundred thirty-eight thousand, seven hundred one".