140415641 has 2 divisors, whose sum is σ = 140415642. Its totient is φ = 140415640.

The previous prime is 140415601. The next prime is 140415659. The reversal of 140415641 is 146514041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103449241 + 36966400 = 10171^2 + 6080^2 .

It is a cyclic number.

It is not a de Polignac number, because 140415641 - 2⁶ = 140415577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140415641.

It is not a weakly prime, because it can be changed into another prime (140415601) 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 as a sum of consecutive naturals, namely, 70207820 + 70207821.

It is an arithmetic number, because the mean of its divisors is an integer number (70207821).

Almost surely, 2^140415641 is an apocalyptic number.

It is an amenable number.

140415641 is a deficient number, since it is larger than the sum of its proper divisors (1).

140415641 is an equidigital number, since it uses as much as digits as its factorization.

140415641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 140415641 is about 11849.7105871831. The cubic root of 140415641 is about 519.7627628381.

Adding to 140415641 its reverse (146514041), we get a palindrome (286929682).

The spelling of 140415641 in words is "one hundred forty million, four hundred fifteen thousand, six hundred forty-one".