2100126 has 32 divisors (see below), whose sum is σ = 4958208. Its totient is φ = 580320.

The previous prime is 2100121. The next prime is 2100167. The reversal of 2100126 is 6210012.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496 + ... + 2108.

It is an arithmetic number, because the mean of its divisors is an integer number (154944).

2^2100126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479104).

2100126 is an abundant number, since it is smaller than the sum of its proper divisors (2858082).

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

2100126 is a wasteful number, since it uses less digits than its factorization.

2100126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2100126 is about 1449.1811480971. The cubic root of 2100126 is about 128.0604776059.

Adding to 2100126 its reverse (6210012), we get a palindrome (8310138).

It can be divided in two parts, 2 and 100126, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 2100126 in words is "two million, one hundred thousand, one hundred twenty-six".