140725279 has 2 divisors, whose sum is σ = 140725280. Its totient is φ = 140725278.

The previous prime is 140725187. The next prime is 140725289. The reversal of 140725279 is 972527041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140725279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140725289) 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, 70362639 + 70362640.

It is an arithmetic number, because the mean of its divisors is an integer number (70362640).

Almost surely, 2^140725279 is an apocalyptic number.

140725279 is a deficient number, since it is larger than the sum of its proper divisors (1).

140725279 is an equidigital number, since it uses as much as digits as its factorization.

140725279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 140725279 is about 11862.7686060211. The cubic root of 140725279 is about 520.1445345269.

The spelling of 140725279 in words is "one hundred forty million, seven hundred twenty-five thousand, two hundred seventy-nine".