140427277 has 2 divisors, whose sum is σ = 140427278. Its totient is φ = 140427276.

The previous prime is 140427239. The next prime is 140427281. The reversal of 140427277 is 772724041.

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., 84162276 + 56265001 = 9174^2 + 7501^2 .

It is a cyclic number.

It is not a de Polignac number, because 140427277 - 2⁷ = 140427149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140427227) 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, 70213638 + 70213639.

It is an arithmetic number, because the mean of its divisors is an integer number (70213639).

Almost surely, 2^140427277 is an apocalyptic number.

It is an amenable number.

140427277 is a deficient number, since it is larger than the sum of its proper divisors (1).

140427277 is an equidigital number, since it uses as much as digits as its factorization.

140427277 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 140427277 is about 11850.2015594672. The cubic root of 140427277 is about 519.7771197203. Note that the first 3 decimals are identical.

The spelling of 140427277 in words is "one hundred forty million, four hundred twenty-seven thousand, two hundred seventy-seven".