6721342 has 8 divisors (see below), whose sum is σ = 10120032. Its totient is φ = 3348000.

The previous prime is 6721333. The next prime is 6721343. The reversal of 6721342 is 2431276.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5659 + ... + 6742.

It is an arithmetic number, because the mean of its divisors is an integer number (1265004).

Almost surely, 2^6721342 is an apocalyptic number.

6721342 is a deficient number, since it is larger than the sum of its proper divisors (3398690).

6721342 is a wasteful number, since it uses less digits than its factorization.

6721342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12674.

The product of its digits is 2016, while the sum is 25.

The square root of 6721342 is about 2592.5551103111. Note that the first 3 decimals coincide. The cubic root of 6721342 is about 188.7203201728.

The spelling of 6721342 in words is "six million, seven hundred twenty-one thousand, three hundred forty-two".