122638 has 8 divisors (see below), whose sum is σ = 194832. Its totient is φ = 57696.

The previous prime is 122611. The next prime is 122651. The reversal of 122638 is 836221.

122638 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

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

It is a congruent number.

It is an unprimeable number.

122638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770 + ... + 1837.

It is an arithmetic number, because the mean of its divisors is an integer number (24354).

2¹²²⁶³⁸ is an apocalyptic number.

122638 is a deficient number, since it is larger than the sum of its proper divisors (72194).

122638 is a wasteful number, since it uses less digits than its factorization.

122638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626.

The product of its digits is 576, while the sum is 22.

The square root of 122638 is about 350.1970873665. The cubic root of 122638 is about 49.6830619165.

Adding to 122638 its reverse (836221), we get a palindrome (958859).

The spelling of 122638 in words is "one hundred twenty-two thousand, six hundred thirty-eight".