140012777 has 2 divisors, whose sum is σ = 140012778. Its totient is φ = 140012776.

The previous prime is 140012737. The next prime is 140012779. The reversal of 140012777 is 777210041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138980521 + 1032256 = 11789^2 + 1016^2 .

It is an emirp because it is prime and its reverse (777210041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140012777 - 2⁶ = 140012713 is a prime.

Together with 140012779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140012779) 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, 70006388 + 70006389.

It is an arithmetic number, because the mean of its divisors is an integer number (70006389).

Almost surely, 2^140012777 is an apocalyptic number.

It is an amenable number.

140012777 is a deficient number, since it is larger than the sum of its proper divisors (1).

140012777 is an equidigital number, since it uses as much as digits as its factorization.

140012777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 140012777 is about 11832.6994806764. The cubic root of 140012777 is about 519.2652060134.

The spelling of 140012777 in words is "one hundred forty million, twelve thousand, seven hundred seventy-seven".