140502641 has 2 divisors, whose sum is σ = 140502642. Its totient is φ = 140502640.

The previous prime is 140502617. The next prime is 140502673. The reversal of 140502641 is 146205041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104550625 + 35952016 = 10225^2 + 5996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140502641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140502041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70251320 + 70251321.

It is an arithmetic number, because the mean of its divisors is an integer number (70251321).

Almost surely, 2^140502641 is an apocalyptic number.

It is an amenable number.

140502641 is a deficient number, since it is larger than the sum of its proper divisors (1).

140502641 is an equidigital number, since it uses as much as digits as its factorization.

140502641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 140502641 is about 11853.3809944674. The cubic root of 140502641 is about 519.8700871222.

Adding to 140502641 its reverse (146205041), we get a palindrome (286707682).

The spelling of 140502641 in words is "one hundred forty million, five hundred two thousand, six hundred forty-one".