542563841 has 2 divisors, whose sum is σ = 542563842. Its totient is φ = 542563840.

The previous prime is 542563831. The next prime is 542563907. The reversal of 542563841 is 148365245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469632241 + 72931600 = 21671^2 + 8540^2 .

It is a cyclic number.

It is not a de Polignac number, because 542563841 - 2¹⁰ = 542562817 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 542563795 and 542563804.

It is not a weakly prime, because it can be changed into another prime (542563831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271281920 + 271281921.

It is an arithmetic number, because the mean of its divisors is an integer number (271281921).

Almost surely, 2^542563841 is an apocalyptic number.

It is an amenable number.

542563841 is a deficient number, since it is larger than the sum of its proper divisors (1).

542563841 is an equidigital number, since it uses as much as digits as its factorization.

542563841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 38.

The square root of 542563841 is about 23292.9998282746. Note that the first 3 decimals coincide. The cubic root of 542563841 is about 815.6120164911.

The spelling of 542563841 in words is "five hundred forty-two million, five hundred sixty-three thousand, eight hundred forty-one".