68828042 has 4 divisors (see below), whose sum is σ = 103242066. Its totient is φ = 34414020.

The previous prime is 68828033. The next prime is 68828047. The reversal of 68828042 is 24082886.

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

It can be written as a sum of positive squares in only one way, i.e., 57138481 + 11689561 = 7559^2 + 3419^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68827987 and 68828005.

It is not an unprimeable number, because it can be changed into a prime (68828047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17207009 + ... + 17207012.

Almost surely, 2^68828042 is an apocalyptic number.

68828042 is a deficient number, since it is larger than the sum of its proper divisors (34414024).

68828042 is a wasteful number, since it uses less digits than its factorization.

68828042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34414023.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 68828042 is about 8296.2667507741. The cubic root of 68828042 is about 409.8155863096.

The spelling of 68828042 in words is "sixty-eight million, eight hundred twenty-eight thousand, forty-two".