140725729 has 2 divisors, whose sum is σ = 140725730. Its totient is φ = 140725728.

The previous prime is 140725703. The next prime is 140725733. The reversal of 140725729 is 927527041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129436129 + 11289600 = 11377^2 + 3360^2 .

It is a cyclic number.

It is not a de Polignac number, because 140725729 - 2⁷ = 140725601 is a prime.

It is a Chen prime.

It is equal to p_7950826 and since 140725729 and 7950826 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (140725769) 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, 70362864 + 70362865.

It is an arithmetic number, because the mean of its divisors is an integer number (70362865).

Almost surely, 2^140725729 is an apocalyptic number.

It is an amenable number.

140725729 is a deficient number, since it is larger than the sum of its proper divisors (1).

140725729 is an equidigital number, since it uses as much as digits as its factorization.

140725729 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 140725729 is about 11862.7875729105. The cubic root of 140725729 is about 520.1450889518.

The spelling of 140725729 in words is "one hundred forty million, seven hundred twenty-five thousand, seven hundred twenty-nine".