140242777 has 2 divisors, whose sum is σ = 140242778. Its totient is φ = 140242776.

The previous prime is 140242763. The next prime is 140242787. The reversal of 140242777 is 777242041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126247696 + 13995081 = 11236^2 + 3741^2 .

It is a cyclic number.

It is not a de Polignac number, because 140242777 - 2⁷ = 140242649 is a prime.

It is not a weakly prime, because it can be changed into another prime (140242747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70121388 + 70121389.

It is an arithmetic number, because the mean of its divisors is an integer number (70121389).

Almost surely, 2^140242777 is an apocalyptic number.

It is an amenable number.

140242777 is a deficient number, since it is larger than the sum of its proper divisors (1).

140242777 is an equidigital number, since it uses as much as digits as its factorization.

140242777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21952, while the sum is 34.

The square root of 140242777 is about 11842.4143231015. The cubic root of 140242777 is about 519.5493840312.

The spelling of 140242777 in words is "one hundred forty million, two hundred forty-two thousand, seven hundred seventy-seven".