140505751 has 2 divisors, whose sum is σ = 140505752. Its totient is φ = 140505750.

The previous prime is 140505707. The next prime is 140505763. The reversal of 140505751 is 157505041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140505751 - 2¹¹ = 140503703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140505791) 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, 70252875 + 70252876.

It is an arithmetic number, because the mean of its divisors is an integer number (70252876).

Almost surely, 2^140505751 is an apocalyptic number.

140505751 is a deficient number, since it is larger than the sum of its proper divisors (1).

140505751 is an equidigital number, since it uses as much as digits as its factorization.

140505751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 140505751 is about 11853.5121799406. The cubic root of 140505751 is about 519.8739228367.

The spelling of 140505751 in words is "one hundred forty million, five hundred five thousand, seven hundred fifty-one".