122640246 has 48 divisors (see below), whose sum is σ = 277673760. Its totient is φ = 39070080.

The previous prime is 122640241. The next prime is 122640253. The reversal of 122640246 is 642046221.

122640246 is a `hidden beast` number, since 12 + 2 + 640 + 2 + 4 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122640241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52626 + ... + 54906.

It is an arithmetic number, because the mean of its divisors is an integer number (5784870).

Almost surely, 2^122640246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122640246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138836880).

122640246 is an abundant number, since it is smaller than the sum of its proper divisors (155033514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122640246 is a wasteful number, since it uses less digits than its factorization.

122640246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2418 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 122640246 is about 11074.3056667224. The cubic root of 122640246 is about 496.8336521425.

Adding to 122640246 its reverse (642046221), we get a palindrome (764686467).

The spelling of 122640246 in words is "one hundred twenty-two million, six hundred forty thousand, two hundred forty-six".