2124900 has 72 divisors (see below), whose sum is σ = 6839840. Its totient is φ = 565920.

The previous prime is 2124887. The next prime is 2124919. The reversal of 2124900 is 94212.

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

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, 2307 + ... + 3093.

2^2124900 is an apocalyptic number.

2124900 is a gapful number since it is divisible by the number (20) 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 2124900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3419920).

2124900 is an abundant number, since it is smaller than the sum of its proper divisors (4714940).

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

2124900 is a wasteful number, since it uses less digits than its factorization.

2124900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2124900 is about 1457.7036735908. The cubic root of 2124900 is about 128.5620628098.

The spelling of 2124900 in words is "two million, one hundred twenty-four thousand, nine hundred".