122544638 has 8 divisors (see below), whose sum is σ = 184750632. Its totient is φ = 60961096.

The previous prime is 122544637. The next prime is 122544647. The reversal of 122544638 is 836445221.

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

It is a junction number, because it is equal to n+sod(n) for n = 122544598 and 122544607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122544637) 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, 155120 + ... + 155907.

It is an arithmetic number, because the mean of its divisors is an integer number (23093829).

Almost surely, 2^122544638 is an apocalyptic number.

122544638 is a deficient number, since it is larger than the sum of its proper divisors (62205994).

122544638 is a wasteful number, since it uses less digits than its factorization.

122544638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311226.

The product of its digits is 46080, while the sum is 35.

The square root of 122544638 is about 11069.9881662087. The cubic root of 122544638 is about 496.7045112273.

Adding to 122544638 its reverse (836445221), we get a palindrome (958989859).

The spelling of 122544638 in words is "one hundred twenty-two million, five hundred forty-four thousand, six hundred thirty-eight".