68221042 has 8 divisors (see below), whose sum is σ = 102959856. Its totient is φ = 33901092.

The previous prime is 68221037. The next prime is 68221093. The reversal of 68221042 is 24012286.

It is a happy number.

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

It is a super-2 number, since 2×68221042² = 9308221143131528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68220998 and 68221016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104308 + ... + 104959.

It is an arithmetic number, because the mean of its divisors is an integer number (12869982).

Almost surely, 2^68221042 is an apocalyptic number.

68221042 is a deficient number, since it is larger than the sum of its proper divisors (34738814).

68221042 is a wasteful number, since it uses less digits than its factorization.

68221042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209432.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 68221042 is about 8259.6030170947. The cubic root of 68221042 is about 408.6072951824.

The spelling of 68221042 in words is "sixty-eight million, two hundred twenty-one thousand, forty-two".