642314726 has 4 divisors (see below), whose sum is σ = 963472092. Its totient is φ = 321157362.

The previous prime is 642314683. The next prime is 642314731. The reversal of 642314726 is 627413246.

642314726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

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, 160578680 + ... + 160578683.

It is an arithmetic number, because the mean of its divisors is an integer number (240868023).

Almost surely, 2^642314726 is an apocalyptic number.

642314726 is a deficient number, since it is larger than the sum of its proper divisors (321157366).

642314726 is a wasteful number, since it uses less digits than its factorization.

642314726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321157365.

The product of its digits is 48384, while the sum is 35.

The square root of 642314726 is about 25343.9287798873. The cubic root of 642314726 is about 862.8115689030.

The spelling of 642314726 in words is "six hundred forty-two million, three hundred fourteen thousand, seven hundred twenty-six".