74800129 has 2 divisors, whose sum is σ = 74800130. Its totient is φ = 74800128.

The previous prime is 74800109. The next prime is 74800147. The reversal of 74800129 is 92100847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67617729 + 7182400 = 8223^2 + 2680^2 .

It is a cyclic number.

It is not a de Polignac number, because 74800129 - 2¹¹ = 74798081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74800129.

It is not a weakly prime, because it can be changed into another prime (74800109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37400064 + 37400065.

It is an arithmetic number, because the mean of its divisors is an integer number (37400065).

Almost surely, 2^74800129 is an apocalyptic number.

It is an amenable number.

74800129 is a deficient number, since it is larger than the sum of its proper divisors (1).

74800129 is an equidigital number, since it uses as much as digits as its factorization.

74800129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 74800129 is about 8648.7067819414. The cubic root of 74800129 is about 421.3413822007.

The spelling of 74800129 in words is "seventy-four million, eight hundred thousand, one hundred twenty-nine".