140205077 has 2 divisors, whose sum is σ = 140205078. Its totient is φ = 140205076.

The previous prime is 140205059. The next prime is 140205083. The reversal of 140205077 is 770502041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71132356 + 69072721 = 8434^2 + 8311^2 .

It is a cyclic number.

It is not a de Polignac number, because 140205077 - 2¹⁶ = 140139541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140205007) 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, 70102538 + 70102539.

It is an arithmetic number, because the mean of its divisors is an integer number (70102539).

Almost surely, 2^140205077 is an apocalyptic number.

It is an amenable number.

140205077 is a deficient number, since it is larger than the sum of its proper divisors (1).

140205077 is an equidigital number, since it uses as much as digits as its factorization.

140205077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 140205077 is about 11840.8224798787. The cubic root of 140205077 is about 519.5028248486.

The spelling of 140205077 in words is "one hundred forty million, two hundred five thousand, seventy-seven".