6671542 has 4 divisors (see below), whose sum is σ = 10007316. Its totient is φ = 3335770.

The previous prime is 6671519. The next prime is 6671549. The reversal of 6671542 is 2451766.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2451766 = 2 ⋅1225883.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6671549) by changing a digit.

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, 1667884 + ... + 1667887.

It is an arithmetic number, because the mean of its divisors is an integer number (2501829).

Almost surely, 2^6671542 is an apocalyptic number.

6671542 is a deficient number, since it is larger than the sum of its proper divisors (3335774).

6671542 is a wasteful number, since it uses less digits than its factorization.

6671542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335773.

The product of its digits is 10080, while the sum is 31.

The square root of 6671542 is about 2582.9328291692. The cubic root of 6671542 is about 188.2530732403.

It can be divided in two parts, 667 and 1542, that added together give a square (2209 = 47²).

The spelling of 6671542 in words is "six million, six hundred seventy-one thousand, five hundred forty-two".