75244129 has 2 divisors, whose sum is σ = 75244130. Its totient is φ = 75244128.

The previous prime is 75244121. The next prime is 75244151. The reversal of 75244129 is 92144257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61591104 + 13653025 = 7848^2 + 3695^2 .

It is a cyclic number.

It is not a de Polignac number, because 75244129 - 2³ = 75244121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75244094 and 75244103.

It is not a weakly prime, because it can be changed into another prime (75244121) 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, 37622064 + 37622065.

It is an arithmetic number, because the mean of its divisors is an integer number (37622065).

Almost surely, 2^75244129 is an apocalyptic number.

It is an amenable number.

75244129 is a deficient number, since it is larger than the sum of its proper divisors (1).

75244129 is an equidigital number, since it uses as much as digits as its factorization.

75244129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 75244129 is about 8674.3373810338. The cubic root of 75244129 is about 422.1734067936.

The spelling of 75244129 in words is "seventy-five million, two hundred forty-four thousand, one hundred twenty-nine".