122255040 has 112 divisors (see below), whose sum is σ = 390339072. Its totient is φ = 32418816.

The previous prime is 122255027. The next prime is 122255057. The reversal of 122255040 is 40552221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122254998 and 122255016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332937 + ... + 333303.

Almost surely, 2^122255040 is an apocalyptic number.

122255040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122255040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195169536).

122255040 is an abundant number, since it is smaller than the sum of its proper divisors (268084032).

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

122255040 is a wasteful number, since it uses less digits than its factorization.

122255040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 724 counting only the distinct ones).

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

The square root of 122255040 is about 11056.9001080773. The cubic root of 122255040 is about 496.3129312125.

The spelling of 122255040 in words is "one hundred twenty-two million, two hundred fifty-five thousand, forty".