140129441 has 2 divisors, whose sum is σ = 140129442. Its totient is φ = 140129440.

The previous prime is 140129411. The next prime is 140129443. The reversal of 140129441 is 144921041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137569441 + 2560000 = 11729^2 + 1600^2 .

It is an emirp because it is prime and its reverse (144921041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140129441 - 2⁶ = 140129377 is a prime.

It is a Sophie Germain prime.

Together with 140129443, it forms a pair of twin primes.

It is a Chen 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 140129441.

It is not a weakly prime, because it can be changed into another prime (140129443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70064720 + 70064721.

It is an arithmetic number, because the mean of its divisors is an integer number (70064721).

Almost surely, 2^140129441 is an apocalyptic number.

It is an amenable number.

140129441 is a deficient number, since it is larger than the sum of its proper divisors (1).

140129441 is an equidigital number, since it uses as much as digits as its factorization.

140129441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 140129441 is about 11837.6281830441. The cubic root of 140129441 is about 519.4093898499.

The spelling of 140129441 in words is "one hundred forty million, one hundred twenty-nine thousand, four hundred forty-one".