129996743 has 2 divisors, whose sum is σ = 129996744. Its totient is φ = 129996742.

The previous prime is 129996731. The next prime is 129996749. The reversal of 129996743 is 347699921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129996743 - 2⁸ = 129996487 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 129996691 and 129996700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129996749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64998371 + 64998372.

It is an arithmetic number, because the mean of its divisors is an integer number (64998372).

Almost surely, 2^129996743 is an apocalyptic number.

129996743 is a deficient number, since it is larger than the sum of its proper divisors (1).

129996743 is an equidigital number, since it uses as much as digits as its factorization.

129996743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 50.

The square root of 129996743 is about 11401.6114211983. The cubic root of 129996743 is about 506.5754712848.

The spelling of 129996743 in words is "one hundred twenty-nine million, nine hundred ninety-six thousand, seven hundred forty-three".