5145128243 has 2 divisors, whose sum is σ = 5145128244. Its totient is φ = 5145128242.

The previous prime is 5145128239. The next prime is 5145128279. The reversal of 5145128243 is 3428215415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5145128243 - 2² = 5145128239 is a prime.

It is not a weakly prime, because it can be changed into another prime (5145127243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2572564121 + 2572564122.

It is an arithmetic number, because the mean of its divisors is an integer number (2572564122).

Almost surely, 2^5145128243 is an apocalyptic number.

5145128243 is a deficient number, since it is larger than the sum of its proper divisors (1).

5145128243 is an equidigital number, since it uses as much as digits as its factorization.

5145128243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 35.

The square root of 5145128243 is about 71729.5493015257. The cubic root of 5145128243 is about 1726.3627954240.

The spelling of 5145128243 in words is "five billion, one hundred forty-five million, one hundred twenty-eight thousand, two hundred forty-three".