122405250 has 128 divisors (see below), whose sum is σ = 343160064. Its totient is φ = 28800000.

The previous prime is 122405243. The next prime is 122405263. The reversal of 122405250 is 52504221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 305050 + ... + 305450.

It is an arithmetic number, because the mean of its divisors is an integer number (2680938).

Almost surely, 2^122405250 is an apocalyptic number.

122405250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122405250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171580032).

122405250 is an abundant number, since it is smaller than the sum of its proper divisors (220754814).

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

122405250 is a wasteful number, since it uses less digits than its factorization.

122405250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 122405250 is about 11063.6906138955. The cubic root of 122405250 is about 496.5161148019.

Adding to 122405250 its reverse (52504221), we get a palindrome (174909471).

The spelling of 122405250 in words is "one hundred twenty-two million, four hundred five thousand, two hundred fifty".