129545137 has 2 divisors, whose sum is σ = 129545138. Its totient is φ = 129545136.

The previous prime is 129545099. The next prime is 129545147. The reversal of 129545137 is 731545921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67387681 + 62157456 = 8209^2 + 7884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129545137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129545096 and 129545105.

It is not a weakly prime, because it can be changed into another prime (129545147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64772568 + 64772569.

It is an arithmetic number, because the mean of its divisors is an integer number (64772569).

Almost surely, 2^129545137 is an apocalyptic number.

It is an amenable number.

129545137 is a deficient number, since it is larger than the sum of its proper divisors (1).

129545137 is an equidigital number, since it uses as much as digits as its factorization.

129545137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 129545137 is about 11381.7897098831. The cubic root of 129545137 is about 505.9881797715.

The spelling of 129545137 in words is "one hundred twenty-nine million, five hundred forty-five thousand, one hundred thirty-seven".