2142540530 has 16 divisors (see below), whose sum is σ = 4153232664. Its totient is φ = 791091840.

The previous prime is 2142540527. The next prime is 2142540553. The reversal of 2142540530 is 350452412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1661133049 + 481407481 = 40757^2 + 21941^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 2142540530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8240411 + ... + 8240670.

Almost surely, 2^2142540530 is an apocalyptic number.

2142540530 is a deficient number, since it is larger than the sum of its proper divisors (2010692134).

2142540530 is a wasteful number, since it uses less digits than its factorization.

2142540530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16481101.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2142540530 is about 46287.5850525819. The cubic root of 2142540530 is about 1289.1684904404.

Adding to 2142540530 its reverse (350452412), we get a palindrome (2492992942).

The spelling of 2142540530 in words is "two billion, one hundred forty-two million, five hundred forty thousand, five hundred thirty".