68428742 has 8 divisors (see below), whose sum is σ = 102700056. Its totient is φ = 34195392.

The previous prime is 68428741. The next prime is 68428753. The reversal of 68428742 is 24782486.

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

It is a self number, because there is not a number n which added to its sum of digits gives 68428742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68428741) 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, 4448 + ... + 12515.

It is an arithmetic number, because the mean of its divisors is an integer number (12837507).

Almost surely, 2^68428742 is an apocalyptic number.

68428742 is a deficient number, since it is larger than the sum of its proper divisors (34271314).

68428742 is a wasteful number, since it uses less digits than its factorization.

68428742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18982.

The product of its digits is 172032, while the sum is 41.

The square root of 68428742 is about 8272.1667052834. The cubic root of 68428742 is about 409.0215454443.

The spelling of 68428742 in words is "sixty-eight million, four hundred twenty-eight thousand, seven hundred forty-two".