6542212130 has 16 divisors (see below), whose sum is σ = 11780528760. Its totient is φ = 2615874432.

The previous prime is 6542212129. The next prime is 6542212133. The reversal of 6542212130 is 312122456.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6042108361 + 500103769 = 77731^2 + 22363^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6542212130.

It is not an unprimeable number, because it can be changed into a prime (6542212133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98825 + ... + 151164.

Almost surely, 2^6542212130 is an apocalyptic number.

6542212130 is a deficient number, since it is larger than the sum of its proper divisors (5238316630).

6542212130 is a wasteful number, since it uses less digits than its factorization.

6542212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252613.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6542212130 is about 80883.9423495171. The cubic root of 6542212130 is about 1870.2867938793.

Adding to 6542212130 its reverse (312122456), we get a palindrome (6854334586).

The spelling of 6542212130 in words is "six billion, five hundred forty-two million, two hundred twelve thousand, one hundred thirty".