68042133 has 8 divisors (see below), whose sum is σ = 100803200. Its totient is φ = 45361404.

The previous prime is 68042123. The next prime is 68042141. The reversal of 68042133 is 33124086.

It is a happy number.

It is not a de Polignac number, because 68042133 - 2¹² = 68038037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2520079 = 68042133 / (6 + 8 + 0 + 4 + 2 + 1 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68042097 and 68042106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68042113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1260013 + ... + 1260066.

It is an arithmetic number, because the mean of its divisors is an integer number (12600400).

Almost surely, 2^68042133 is an apocalyptic number.

It is an amenable number.

68042133 is a deficient number, since it is larger than the sum of its proper divisors (32761067).

68042133 is a wasteful number, since it uses less digits than its factorization.

68042133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520088 (or 2520082 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 68042133 is about 8248.7655440072. The cubic root of 68042133 is about 408.2497929704.

The spelling of 68042133 in words is "sixty-eight million, forty-two thousand, one hundred thirty-three".