6531057142 has 16 divisors (see below), whose sum is σ = 9907484832. Its totient is φ = 3228629760.

The previous prime is 6531057103. The next prime is 6531057149. The reversal of 6531057142 is 2417501356.

It is a super-3 number, since 3×6531057142³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6531057098 and 6531057107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531057149) 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, 183688 + ... + 216340.

It is an arithmetic number, because the mean of its divisors is an integer number (619217802).

Almost surely, 2^6531057142 is an apocalyptic number.

6531057142 is a deficient number, since it is larger than the sum of its proper divisors (3376427690).

6531057142 is a wasteful number, since it uses less digits than its factorization.

6531057142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33783.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 6531057142 is about 80814.9561776779. The cubic root of 6531057142 is about 1869.2231936131.

Adding to 6531057142 its reverse (2417501356), we get a palindrome (8948558498).

The spelling of 6531057142 in words is "six billion, five hundred thirty-one million, fifty-seven thousand, one hundred forty-two".