122123138 has 16 divisors (see below), whose sum is σ = 194215320. Its totient is φ = 57394176.

The previous prime is 122123137. The next prime is 122123161. The reversal of 122123138 is 831321221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 120714169 + 1408969 = 10987^2 + 1187^2 .

It is not an unprimeable number, because it can be changed into a prime (122123137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30518 + ... + 34286.

Almost surely, 2^122123138 is an apocalyptic number.

122123138 is a deficient number, since it is larger than the sum of its proper divisors (72092182).

122123138 is a wasteful number, since it uses less digits than its factorization.

122123138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741.

The product of its digits is 576, while the sum is 23.

The square root of 122123138 is about 11050.9338066971. The cubic root of 122123138 is about 496.1343749042.

Adding to 122123138 its reverse (831321221), we get a palindrome (953444359).

The spelling of 122123138 in words is "one hundred twenty-two million, one hundred twenty-three thousand, one hundred thirty-eight".