6543142 has 4 divisors (see below), whose sum is σ = 9814716. Its totient is φ = 3271570.

The previous prime is 6543127. The next prime is 6543169. The reversal of 6543142 is 2413456.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635784 + ... + 1635787.

It is an arithmetic number, because the mean of its divisors is an integer number (2453679).

Almost surely, 2^6543142 is an apocalyptic number.

6543142 is a deficient number, since it is larger than the sum of its proper divisors (3271574).

6543142 is a wasteful number, since it uses less digits than its factorization.

6543142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271573.

The product of its digits is 2880, while the sum is 25.

The square root of 6543142 is about 2557.9566063559. The cubic root of 6543142 is about 187.0375400055.

Adding to 6543142 its reverse (2413456), we get a palindrome (8956598).

The spelling of 6543142 in words is "six million, five hundred forty-three thousand, one hundred forty-two".