140779141 has 2 divisors, whose sum is σ = 140779142. Its totient is φ = 140779140.

The previous prime is 140779139. The next prime is 140779157. The reversal of 140779141 is 141977041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116316225 + 24462916 = 10785^2 + 4946^2 .

It is an emirp because it is prime and its reverse (141977041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140779141 - 2¹ = 140779139 is a prime.

Together with 140779139, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 140779097 and 140779106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140770141) 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, 70389570 + 70389571.

It is an arithmetic number, because the mean of its divisors is an integer number (70389571).

Almost surely, 2^140779141 is an apocalyptic number.

It is an amenable number.

140779141 is a deficient number, since it is larger than the sum of its proper divisors (1).

140779141 is an equidigital number, since it uses as much as digits as its factorization.

140779141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 140779141 is about 11865.0386008643. The cubic root of 140779141 is about 520.2108870959.

The spelling of 140779141 in words is "one hundred forty million, seven hundred seventy-nine thousand, one hundred forty-one".