129037487 has 2 divisors, whose sum is σ = 129037488. Its totient is φ = 129037486.

The previous prime is 129037481. The next prime is 129037523. The reversal of 129037487 is 784730921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129037487 - 2⁴ = 129037471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129037481) 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, 64518743 + 64518744.

It is an arithmetic number, because the mean of its divisors is an integer number (64518744).

Almost surely, 2^129037487 is an apocalyptic number.

129037487 is a deficient number, since it is larger than the sum of its proper divisors (1).

129037487 is an equidigital number, since it uses as much as digits as its factorization.

129037487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 129037487 is about 11359.4668448832. The cubic root of 129037487 is about 505.3263739992.

The spelling of 129037487 in words is "one hundred twenty-nine million, thirty-seven thousand, four hundred eighty-seven".