100420440500 has 24 divisors (see below), whose sum is σ = 219318243144. Its totient is φ = 40168176000.

The previous prime is 100420440467. The next prime is 100420440521. The reversal of 100420440500 is 5044024001.

100420440500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 264647824 + 100155792676 = 16268^2 + 316474^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100419941 + ... + 100420940.

It is an arithmetic number, because the mean of its divisors is an integer number (9138260131).

Almost surely, 2^100420440500 is an apocalyptic number.

100420440500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100420440500 is an abundant number, since it is smaller than the sum of its proper divisors (118897802644).

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

100420440500 is a wasteful number, since it uses less digits than its factorization.

100420440500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200840900 (or 200840888 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 100420440500 its reverse (5044024001), we get a palindrome (105464464501).

The spelling of 100420440500 in words is "one hundred billion, four hundred twenty million, four hundred forty thousand, five hundred".