542043503 has 2 divisors, whose sum is σ = 542043504. Its totient is φ = 542043502.

The previous prime is 542043497. The next prime is 542043559. The reversal of 542043503 is 305340245.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542043503 is a prime.

It is a super-2 number, since 2×542043503² = 587622318289022018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542643503) 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, 271021751 + 271021752.

It is an arithmetic number, because the mean of its divisors is an integer number (271021752).

Almost surely, 2^542043503 is an apocalyptic number.

542043503 is a deficient number, since it is larger than the sum of its proper divisors (1).

542043503 is an equidigital number, since it uses as much as digits as its factorization.

542043503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 542043503 is about 23281.8277418247. The cubic root of 542043503 is about 815.3511994619.

Adding to 542043503 its reverse (305340245), we get a palindrome (847383748).

The spelling of 542043503 in words is "five hundred forty-two million, forty-three thousand, five hundred three".