129767741 has 2 divisors, whose sum is σ = 129767742. Its totient is φ = 129767740.

The previous prime is 129767717. The next prime is 129767773. The reversal of 129767741 is 147767921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126652516 + 3115225 = 11254^2 + 1765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129767741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129767692 and 129767701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129767791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64883870 + 64883871.

It is an arithmetic number, because the mean of its divisors is an integer number (64883871).

Almost surely, 2^129767741 is an apocalyptic number.

It is an amenable number.

129767741 is a deficient number, since it is larger than the sum of its proper divisors (1).

129767741 is an equidigital number, since it uses as much as digits as its factorization.

129767741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 44.

The square root of 129767741 is about 11391.5644667447. The cubic root of 129767741 is about 506.2778356691.

The spelling of 129767741 in words is "one hundred twenty-nine million, seven hundred sixty-seven thousand, seven hundred forty-one".