68139041 has 16 divisors (see below), whose sum is σ = 73008000. Its totient is φ = 63452928.

The previous prime is 68138999. The next prime is 68139083. The reversal of 68139041 is 14093186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68138999) and next prime (68139083).

It is a cyclic number.

It is not a de Polignac number, because 68139041 - 2⁶ = 68138977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68138989 and 68139007.

It is not an unprimeable number, because it can be changed into a prime (68139091) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 202025 + ... + 202361.

It is an arithmetic number, because the mean of its divisors is an integer number (4563000).

Almost surely, 2^68139041 is an apocalyptic number.

It is an amenable number.

68139041 is a deficient number, since it is larger than the sum of its proper divisors (4868959).

68139041 is a wasteful number, since it uses less digits than its factorization.

68139041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 68139041 is about 8254.6375450410. The cubic root of 68139041 is about 408.4435156040.

The spelling of 68139041 in words is "sixty-eight million, one hundred thirty-nine thousand, forty-one".