2124180 has 36 divisors (see below), whose sum is σ = 6443892. Its totient is φ = 566400.

The previous prime is 2124173. The next prime is 2124191. The reversal of 2124180 is 814212.

It can be written as a sum of positive squares in 2 ways, for example, as 944784 + 1179396 = 972^2 + 1086^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5721 + ... + 6080.

It is an arithmetic number, because the mean of its divisors is an integer number (178997).

2^2124180 is an apocalyptic number.

2124180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2124180 is an abundant number, since it is smaller than the sum of its proper divisors (4319712).

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

2124180 is a wasteful number, since it uses less digits than its factorization.

2124180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11816 (or 11811 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2124180 is about 1457.4566888934. The cubic root of 2124180 is about 128.5475405355.

Adding to 2124180 its reverse (814212), we get a palindrome (2938392).

It can be divided in two parts, 21241 and 80, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 2124180 in words is "two million, one hundred twenty-four thousand, one hundred eighty".