74765129 has 2 divisors, whose sum is σ = 74765130. Its totient is φ = 74765128.

The previous prime is 74765113. The next prime is 74765137. The reversal of 74765129 is 92156747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74046025 + 719104 = 8605^2 + 848^2 .

It is an emirp because it is prime and its reverse (92156747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74765129 - 2⁴ = 74765113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (74765179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37382564 + 37382565.

It is an arithmetic number, because the mean of its divisors is an integer number (37382565).

Almost surely, 2^74765129 is an apocalyptic number.

It is an amenable number.

74765129 is a deficient number, since it is larger than the sum of its proper divisors (1).

74765129 is an equidigital number, since it uses as much as digits as its factorization.

74765129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 74765129 is about 8646.6831212899. The cubic root of 74765129 is about 421.2756548227.

The spelling of 74765129 in words is "seventy-four million, seven hundred sixty-five thousand, one hundred twenty-nine".