2100434100 has 72 divisors (see below), whose sum is σ = 6225518208. Its totient is φ = 546451200.

The previous prime is 2100434051. The next prime is 2100434111. The reversal of 2100434100 is 14340012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2100434100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73084 + ... + 97683.

Almost surely, 2^2100434100 is an apocalyptic number.

2100434100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100434100 is an abundant number, since it is smaller than the sum of its proper divisors (4125084108).

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

2100434100 is a wasteful number, since it uses less digits than its factorization.

2100434100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170825 (or 170818 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2100434100 is about 45830.4931241199. The cubic root of 2100434100 is about 1280.6673969106.

Adding to 2100434100 its reverse (14340012), we get a palindrome (2114774112).

The spelling of 2100434100 in words is "two billion, one hundred million, four hundred thirty-four thousand, one hundred".