129465737 has 2 divisors, whose sum is σ = 129465738. Its totient is φ = 129465736.

The previous prime is 129465709. The next prime is 129465757. The reversal of 129465737 is 737564921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81288256 + 48177481 = 9016^2 + 6941^2 .

It is an emirp because it is prime and its reverse (737564921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129465737 - 2⁶ = 129465673 is a prime.

It is a super-2 number, since 2×129465737² = 33522754113906338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129465757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64732868 + 64732869.

It is an arithmetic number, because the mean of its divisors is an integer number (64732869).

Almost surely, 2^129465737 is an apocalyptic number.

It is an amenable number.

129465737 is a deficient number, since it is larger than the sum of its proper divisors (1).

129465737 is an equidigital number, since it uses as much as digits as its factorization.

129465737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 44.

The square root of 129465737 is about 11378.3011473594. The cubic root of 129465737 is about 505.8847829343.

The spelling of 129465737 in words is "one hundred twenty-nine million, four hundred sixty-five thousand, seven hundred thirty-seven".