45128129 has 2 divisors, whose sum is σ = 45128130. Its totient is φ = 45128128.

The previous prime is 45128119. The next prime is 45128189. The reversal of 45128129 is 92182154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31080625 + 14047504 = 5575^2 + 3748^2 .

It is a cyclic number.

It is not a de Polignac number, because 45128129 - 2¹² = 45124033 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45128095 and 45128104.

It is not a weakly prime, because it can be changed into another prime (45128119) 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, 22564064 + 22564065.

It is an arithmetic number, because the mean of its divisors is an integer number (22564065).

Almost surely, 2^45128129 is an apocalyptic number.

It is an amenable number.

45128129 is a deficient number, since it is larger than the sum of its proper divisors (1).

45128129 is an equidigital number, since it uses as much as digits as its factorization.

45128129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 45128129 is about 6717.7473158790. The cubic root of 45128129 is about 356.0265966116.

The spelling of 45128129 in words is "forty-five million, one hundred twenty-eight thousand, one hundred twenty-nine".