68541842 has 4 divisors (see below), whose sum is σ = 102812766. Its totient is φ = 34270920.

The previous prime is 68541779. The next prime is 68541859. The reversal of 68541842 is 24814586.

It is a happy number.

It is a Cunningham number, because it is equal to 8279²+1.

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., 68541841 + 1 = 8279^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68541796 and 68541805.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17135459 + ... + 17135462.

Almost surely, 2^68541842 is an apocalyptic number.

68541842 is a deficient number, since it is larger than the sum of its proper divisors (34270924).

68541842 is a wasteful number, since it uses less digits than its factorization.

68541842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34270923.

The product of its digits is 61440, while the sum is 38.

The square root of 68541842 is about 8279.0000603938. Note that the first 4 decimals coincide. The cubic root of 68541842 is about 409.2467669533.

The spelling of 68541842 in words is "sixty-eight million, five hundred forty-one thousand, eight hundred forty-two".