140030005 has 4 divisors (see below), whose sum is σ = 168036012. Its totient is φ = 112024000.

The previous prime is 140029999. The next prime is 140030017. The reversal of 140030005 is 500030041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500030041 = 7 ⋅71432863.

It can be written as a sum of positive squares in 2 ways, for example, as 60855601 + 79174404 = 7801^2 + 8898^2 .

It is not a de Polignac number, because 140030005 - 2³ = 140029997 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 14002996 + ... + 14003005.

It is an arithmetic number, because the mean of its divisors is an integer number (42009003).

Almost surely, 2^140030005 is an apocalyptic number.

It is an amenable number.

140030005 is a deficient number, since it is larger than the sum of its proper divisors (28006007).

140030005 is an equidigital number, since it uses as much as digits as its factorization.

140030005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28006006.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 140030005 is about 11833.4274409403. The cubic root of 140030005 is about 519.2865029604.

Adding to 140030005 its reverse (500030041), we get a palindrome (640060046).

The spelling of 140030005 in words is "one hundred forty million, thirty thousand, five".