6542742 has 8 divisors (see below), whose sum is σ = 13085496. Its totient is φ = 2180912.

The previous prime is 6542737. The next prime is 6542743. The reversal of 6542742 is 2472456.

It is a sphenic number, since it is the product of 3 distinct primes.

6542742 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542743) 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 in 3 ways as a sum of consecutive naturals, for example, 545223 + ... + 545234.

It is an arithmetic number, because the mean of its divisors is an integer number (1635687).

Almost surely, 2^6542742 is an apocalyptic number.

6542742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6542742 is a wasteful number, since it uses less digits than its factorization.

6542742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090462.

The product of its digits is 13440, while the sum is 30.

The square root of 6542742 is about 2557.8784177517. The cubic root of 6542742 is about 187.0337285573.

The spelling of 6542742 in words is "six million, five hundred forty-two thousand, seven hundred forty-two".