140404513 has 4 divisors (see below), whose sum is σ = 148663620. Its totient is φ = 132145408.

The previous prime is 140404501. The next prime is 140404577. The reversal of 140404513 is 315404041.

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 85895824 + 54508689 = 9268^2 + 7383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140404513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140404013) 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 3 ways as a sum of consecutive naturals, for example, 4129528 + ... + 4129561.

It is an arithmetic number, because the mean of its divisors is an integer number (37165905).

Almost surely, 2^140404513 is an apocalyptic number.

It is an amenable number.

140404513 is a deficient number, since it is larger than the sum of its proper divisors (8259107).

140404513 is an equidigital number, since it uses as much as digits as its factorization.

140404513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8259106.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 140404513 is about 11849.2410305471. The cubic root of 140404513 is about 519.7490320011.

Adding to 140404513 its reverse (315404041), we get a palindrome (455808554).

The spelling of 140404513 in words is "one hundred forty million, four hundred four thousand, five hundred thirteen".