122138 has 8 divisors (see below), whose sum is σ = 184788. Its totient is φ = 60544.

The previous prime is 122131. The next prime is 122147. The reversal of 122138 is 831221.

It can be written as a sum of positive squares in 2 ways, for example, as 117649 + 4489 = 343^2 + 67^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 122138.

It is not an unprimeable number, because it can be changed into a prime (122131) 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, 170 + ... + 522.

2¹²²¹³⁸ is an apocalyptic number.

122138 is a deficient number, since it is larger than the sum of its proper divisors (62650).

122138 is a wasteful number, since it uses less digits than its factorization.

122138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528.

The product of its digits is 96, while the sum is 17.

The square root of 122138 is about 349.4824745248. The cubic root of 122138 is about 49.6154500083.

Adding to 122138 its reverse (831221), we get a palindrome (953359).

It can be divided in two parts, 12213 and 8, that added together give a palindrome (12221).

The spelling of 122138 in words is "one hundred twenty-two thousand, one hundred thirty-eight".