138022 has 4 divisors (see below), whose sum is σ = 207036. Its totient is φ = 69010.

The previous prime is 138007. The next prime is 138041. The reversal of 138022 is 220831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220831 = 13 ⋅16987.

It is a junction number, because it is equal to n+sod(n) for n = 137987 and 138005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34504 + ... + 34507.

It is an arithmetic number, because the mean of its divisors is an integer number (51759).

2¹³⁸⁰²² is an apocalyptic number.

138022 is a deficient number, since it is larger than the sum of its proper divisors (69014).

138022 is an equidigital number, since it uses as much as digits as its factorization.

138022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69013.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 138022 is about 371.5131222447. The cubic root of 138022 is about 51.6792384715.

Adding to 138022 its reverse (220831), we get a palindrome (358853).

The spelling of 138022 in words is "one hundred thirty-eight thousand, twenty-two".