2130724 has 12 divisors (see below), whose sum is σ = 3780364. Its totient is φ = 1050624.

The previous prime is 2130721. The next prime is 2130727. The reversal of 2130724 is 4270312.

It is an interprime number because it is at equal distance from previous prime (2130721) and next prime (2130727).

It can be written as a sum of positive squares in 2 ways, for example, as 964324 + 1166400 = 982^2 + 1080^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3357 + ... + 3940.

2^2130724 is an apocalyptic number.

It is an amenable number.

2130724 is a deficient number, since it is larger than the sum of its proper divisors (1649640).

2130724 is a wasteful number, since it uses less digits than its factorization.

2130724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7374 (or 7372 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2130724 is about 1459.6999691717. The cubic root of 2130724 is about 128.6794114585.

The spelling of 2130724 in words is "two million, one hundred thirty thousand, seven hundred twenty-four".