2142530 has 16 divisors (see below), whose sum is σ = 4153464. Its totient is φ = 791040.

The previous prime is 2142529. The next prime is 2142533. The reversal of 2142530 is 352412.

It can be written as a sum of positive squares in 4 ways, for example, as 1234321 + 908209 = 1111^2 + 953^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2142499 and 2142508.

It is not an unprimeable number, because it can be changed into a prime (2142533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8111 + ... + 8370.

2^2142530 is an apocalyptic number.

2142530 is a deficient number, since it is larger than the sum of its proper divisors (2010934).

2142530 is a wasteful number, since it uses less digits than its factorization.

2142530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16501.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2142530 is about 1463.7383645994. The cubic root of 2142530 is about 128.9166378467.

Adding to 2142530 its reverse (352412), we get a palindrome (2494942).

It can be divided in two parts, 214 and 2530, that added together give a cube (2744 = 14³).

The spelling of 2142530 in words is "two million, one hundred forty-two thousand, five hundred thirty".