5142546281 has 2 divisors, whose sum is σ = 5142546282. Its totient is φ = 5142546280.

The previous prime is 5142546263. The next prime is 5142546293. The reversal of 5142546281 is 1826452415.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2941435225 + 2201111056 = 54235^2 + 46916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5142546281 is a prime.

It is a super-2 number, since 2×5142546281² = 52891564504453861922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5142546221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571273140 + 2571273141.

It is an arithmetic number, because the mean of its divisors is an integer number (2571273141).

Almost surely, 2^5142546281 is an apocalyptic number.

It is an amenable number.

5142546281 is a deficient number, since it is larger than the sum of its proper divisors (1).

5142546281 is an equidigital number, since it uses as much as digits as its factorization.

5142546281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76800, while the sum is 38.

The square root of 5142546281 is about 71711.5491465636. The cubic root of 5142546281 is about 1726.0739688714.

Adding to 5142546281 its reverse (1826452415), we get a palindrome (6968998696).

The spelling of 5142546281 in words is "five billion, one hundred forty-two million, five hundred forty-six thousand, two hundred eighty-one".