4145244281 has 2 divisors, whose sum is σ = 4145244282. Its totient is φ = 4145244280.

The previous prime is 4145244277. The next prime is 4145244343. The reversal of 4145244281 is 1824425414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2863962256 + 1281282025 = 53516^2 + 35795^2 .

It is a cyclic number.

It is not a de Polignac number, because 4145244281 - 2² = 4145244277 is a prime.

It is a super-2 number, since 2×4145244281² = 34366100298326413922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4145244211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072622140 + 2072622141.

It is an arithmetic number, because the mean of its divisors is an integer number (2072622141).

Almost surely, 2^4145244281 is an apocalyptic number.

It is an amenable number.

4145244281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4145244281 is an equidigital number, since it uses as much as digits as its factorization.

4145244281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40960, while the sum is 35.

The square root of 4145244281 is about 64383.5715147894. The cubic root of 4145244281 is about 1606.3864898051.

Adding to 4145244281 its reverse (1824425414), we get a palindrome (5969669695).

The spelling of 4145244281 in words is "four billion, one hundred forty-five million, two hundred forty-four thousand, two hundred eighty-one".