68305842 has 56 divisors (see below), whose sum is σ = 167622480. Its totient is φ = 20693880.

The previous prime is 68305841. The next prime is 68305873. The reversal of 68305842 is 24850386.

It is a junction number, because it is equal to n+sod(n) for n = 68305797 and 68305806.

It is not an unprimeable number, because it can be changed into a prime (68305841) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 13909 + ... + 18167.

Almost surely, 2^68305842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68305842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83811240).

68305842 is an abundant number, since it is smaller than the sum of its proper divisors (99316638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68305842 is a wasteful number, since it uses less digits than its factorization.

68305842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290 (or 4275 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 68305842 is about 8264.7348414816. The cubic root of 68305842 is about 408.7765271901.

The spelling of 68305842 in words is "sixty-eight million, three hundred five thousand, eight hundred forty-two".