542042240251 has 2 divisors, whose sum is σ = 542042240252. Its totient is φ = 542042240250.

The previous prime is 542042240231. The next prime is 542042240279. The reversal of 542042240251 is 152042240245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542042240251 - 2⁵ = 542042240219 is a prime.

It is not a weakly prime, because it can be changed into another prime (542042240231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271021120125 + 271021120126.

It is an arithmetic number, because the mean of its divisors is an integer number (271021120126).

Almost surely, 2^542042240251 is an apocalyptic number.

542042240251 is a deficient number, since it is larger than the sum of its proper divisors (1).

542042240251 is an equidigital number, since it uses as much as digits as its factorization.

542042240251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 542042240251 its reverse (152042240245), we get a palindrome (694084480496).

The spelling of 542042240251 in words is "five hundred forty-two billion, forty-two million, two hundred forty thousand, two hundred fifty-one".