6378742 has 4 divisors (see below), whose sum is σ = 9568116. Its totient is φ = 3189370.

The previous prime is 6378733. The next prime is 6378761. The reversal of 6378742 is 2478736.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 1594684 + ... + 1594687.

It is an arithmetic number, because the mean of its divisors is an integer number (2392029).

Almost surely, 2^6378742 is an apocalyptic number.

6378742 is a deficient number, since it is larger than the sum of its proper divisors (3189374).

6378742 is a wasteful number, since it uses less digits than its factorization.

6378742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189373.

The product of its digits is 56448, while the sum is 37.

The square root of 6378742 is about 2525.6171523016. The cubic root of 6378742 is about 185.4577609598.

The spelling of 6378742 in words is "six million, three hundred seventy-eight thousand, seven hundred forty-two".