140038705 has 4 divisors (see below), whose sum is σ = 168046452. Its totient is φ = 112030960.

The previous prime is 140038649. The next prime is 140038727. The reversal of 140038705 is 507830041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97476129 + 42562576 = 9873^2 + 6524^2 .

It is not a de Polignac number, because 140038705 - 2⁹ = 140038193 is a prime.

It is a super-2 number, since 2×140038705² = 39221677796154050, which contains 22 as substring.

It is a Duffinian 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, 14003866 + ... + 14003875.

It is an arithmetic number, because the mean of its divisors is an integer number (42011613).

Almost surely, 2^140038705 is an apocalyptic number.

It is an amenable number.

140038705 is a deficient number, since it is larger than the sum of its proper divisors (28007747).

140038705 is an equidigital number, since it uses as much as digits as its factorization.

140038705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28007746.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 140038705 is about 11833.7950379411. The cubic root of 140038705 is about 519.2972570818.

Adding to 140038705 its reverse (507830041), we get a palindrome (647868746).

The spelling of 140038705 in words is "one hundred forty million, thirty-eight thousand, seven hundred five".