129425983 has 2 divisors, whose sum is σ = 129425984. Its totient is φ = 129425982.

The previous prime is 129425969. The next prime is 129425987. The reversal of 129425983 is 389524921.

It is a strong prime.

It is an emirp because it is prime and its reverse (389524921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129425983 - 2¹³ = 129417791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129425987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64712991 + 64712992.

It is an arithmetic number, because the mean of its divisors is an integer number (64712992).

Almost surely, 2^129425983 is an apocalyptic number.

129425983 is a deficient number, since it is larger than the sum of its proper divisors (1).

129425983 is an equidigital number, since it uses as much as digits as its factorization.

129425983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 129425983 is about 11376.5540916395. The cubic root of 129425983 is about 505.8329983131.

The spelling of 129425983 in words is "one hundred twenty-nine million, four hundred twenty-five thousand, nine hundred eighty-three".