122755500 has 240 divisors, whose sum is σ = 458762304. Its totient is φ = 27993600.

The previous prime is 122755483. The next prime is 122755553. The reversal of 122755500 is 5557221.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 79 ways as a sum of consecutive naturals, for example, 283284 + ... + 283716.

Almost surely, 2^122755500 is an apocalyptic number.

122755500 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 122755500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229381152).

122755500 is an abundant number, since it is smaller than the sum of its proper divisors (336006804).

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

122755500 is a wasteful number, since it uses less digits than its factorization.

122755500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 122755500 is about 11079.5081118252. The cubic root of 122755500 is about 496.9892403750.

The spelling of 122755500 in words is "one hundred twenty-two million, seven hundred fifty-five thousand, five hundred".