140000005 has 8 divisors (see below), whose sum is σ = 168277752. Its totient is φ = 111814848.

The previous prime is 139999991. The next prime is 140000041. The reversal of 140000005 is 500000041.

It can be written as a sum of positive squares in 4 ways, for example, as 5022081 + 134977924 = 2241^2 + 11618^2 .

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 140000005 - 2⁵ = 139999973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139999946 and 140000000.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 19774 + ... + 25903.

It is an arithmetic number, because the mean of its divisors is an integer number (21034719).

Almost surely, 2^140000005 is an apocalyptic number.

It is an amenable number.

140000005 is a deficient number, since it is larger than the sum of its proper divisors (28277747).

140000005 is an equidigital number, since it uses as much as digits as its factorization.

140000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46295.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 140000005 is about 11832.1597774878. The cubic root of 140000005 is about 519.2494163667.

Adding to 140000005 its reverse (500000041), we get a palindrome (640000046).

The spelling of 140000005 in words is "one hundred forty million, five", and thus it is an aban number.