640100141 has 2 divisors, whose sum is σ = 640100142. Its totient is φ = 640100140.

The previous prime is 640100119. The next prime is 640100161. The reversal of 640100141 is 141001046.

640100141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625500100 + 14600041 = 25010^2 + 3821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-640100141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640100161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320050070 + 320050071.

It is an arithmetic number, because the mean of its divisors is an integer number (320050071).

Almost surely, 2^640100141 is an apocalyptic number.

It is an amenable number.

640100141 is a deficient number, since it is larger than the sum of its proper divisors (1).

640100141 is an equidigital number, since it uses as much as digits as its factorization.

640100141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 640100141 is about 25300.2004142260. The cubic root of 640100141 is about 861.8188210112.

Adding to 640100141 its reverse (141001046), we get a palindrome (781101187).

The spelling of 640100141 in words is "six hundred forty million, one hundred thousand, one hundred forty-one".