140306129 has 2 divisors, whose sum is σ = 140306130. Its totient is φ = 140306128.

The previous prime is 140306113. The next prime is 140306143. The reversal of 140306129 is 921603041.

140306129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98406400 + 41899729 = 9920^2 + 6473^2 .

It is a cyclic number.

It is not a de Polignac number, because 140306129 - 2⁴ = 140306113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140306098 and 140306107.

It is not a weakly prime, because it can be changed into another prime (140306149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70153064 + 70153065.

It is an arithmetic number, because the mean of its divisors is an integer number (70153065).

Almost surely, 2^140306129 is an apocalyptic number.

It is an amenable number.

140306129 is a deficient number, since it is larger than the sum of its proper divisors (1).

140306129 is an equidigital number, since it uses as much as digits as its factorization.

140306129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 140306129 is about 11845.0888135125. The cubic root of 140306129 is about 519.6276044295.

The spelling of 140306129 in words is "one hundred forty million, three hundred six thousand, one hundred twenty-nine".