68320442 has 8 divisors (see below), whose sum is σ = 106936416. Its totient is φ = 32674972.

The previous prime is 68320429. The next prime is 68320451. The reversal of 68320442 is 24402386.

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

It is an unprimeable number.

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, 742568 + ... + 742659.

It is an arithmetic number, because the mean of its divisors is an integer number (13367052).

Almost surely, 2^68320442 is an apocalyptic number.

68320442 is a deficient number, since it is larger than the sum of its proper divisors (38615974).

68320442 is a wasteful number, since it uses less digits than its factorization.

68320442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485252.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 68320442 is about 8265.6180652145. The cubic root of 68320442 is about 408.8056496973.

The spelling of 68320442 in words is "sixty-eight million, three hundred twenty thousand, four hundred forty-two".