140513641 has 2 divisors, whose sum is σ = 140513642. Its totient is φ = 140513640.

The previous prime is 140513629. The next prime is 140513663. The reversal of 140513641 is 146315041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112466025 + 28047616 = 10605^2 + 5296^2 .

It is a cyclic number.

It is not a de Polignac number, because 140513641 - 2¹⁷ = 140382569 is a prime.

It is not a weakly prime, because it can be changed into another prime (140513741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70256820 + 70256821.

It is an arithmetic number, because the mean of its divisors is an integer number (70256821).

Almost surely, 2^140513641 is an apocalyptic number.

It is an amenable number.

140513641 is a deficient number, since it is larger than the sum of its proper divisors (1).

140513641 is an equidigital number, since it uses as much as digits as its factorization.

140513641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 140513641 is about 11853.8449880197. The cubic root of 140513641 is about 519.8836537040.

Adding to 140513641 its reverse (146315041), we get a palindrome (286828682).

The spelling of 140513641 in words is "one hundred forty million, five hundred thirteen thousand, six hundred forty-one".