122440500 has 432 divisors, whose sum is σ = 498790656. Its totient is φ = 24710400.

The previous prime is 122440469. The next prime is 122440501. The reversal of 122440500 is 5044221.

122440500 is a `hidden beast` number, since 122 + 4 + 40 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122440501) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 5323489 + ... + 5323511.

It is an arithmetic number, because the mean of its divisors is an integer number (1154608).

Almost surely, 2^122440500 is an apocalyptic number.

122440500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122440500 is the 5915-th nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122440500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249395328).

122440500 is an abundant number, since it is smaller than the sum of its proper divisors (376350156).

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

122440500 is a wasteful number, since it uses less digits than its factorization.

122440500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 122440500 is about 11065.2835481067. The cubic root of 122440500 is about 496.5637721075.

Adding to 122440500 its reverse (5044221), we get a palindrome (127484721).

The spelling of 122440500 in words is "one hundred twenty-two million, four hundred forty thousand, five hundred".