122755280 has 40 divisors (see below), whose sum is σ = 286434792. Its totient is φ = 48925184.

The previous prime is 122755277. The next prime is 122755309. The reversal of 122755280 is 82557221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 62599744 + 60155536 = 7912^2 + 7756^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 20822 + ... + 26058.

Almost surely, 2^122755280 is an apocalyptic number.

122755280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122755280 is an abundant number, since it is smaller than the sum of its proper divisors (163679512).

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

122755280 is a wasteful number, since it uses less digits than its factorization.

122755280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543 (or 5537 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 122755280 is about 11079.4981835821. The cubic root of 122755280 is about 496.9889434767.

The spelling of 122755280 in words is "one hundred twenty-two million, seven hundred fifty-five thousand, two hundred eighty".