68140043 has 8 divisors (see below), whose sum is σ = 68904000. Its totient is φ = 67380040.

The previous prime is 68140003. The next prime is 68140069. The reversal of 68140043 is 34004186.

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

It is a cyclic number.

It is not a de Polignac number, because 68140043 - 2¹⁶ = 68074507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68139994 and 68140021.

It is not an unprimeable number, because it can be changed into a prime (68140003) 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, 44708 + ... + 46206.

It is an arithmetic number, because the mean of its divisors is an integer number (8613000).

Almost surely, 2^68140043 is an apocalyptic number.

68140043 is a deficient number, since it is larger than the sum of its proper divisors (763957).

68140043 is a wasteful number, since it uses less digits than its factorization.

68140043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 68140043 is about 8254.6982379733. The cubic root of 68140043 is about 408.4455176789.

The spelling of 68140043 in words is "sixty-eight million, one hundred forty thousand, forty-three".