542508493 has 2 divisors, whose sum is σ = 542508494. Its totient is φ = 542508492.

The previous prime is 542508457. The next prime is 542508497. The reversal of 542508493 is 394805245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496309284 + 46199209 = 22278^2 + 6797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542508493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542508497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271254246 + 271254247.

It is an arithmetic number, because the mean of its divisors is an integer number (271254247).

Almost surely, 2^542508493 is an apocalyptic number.

It is an amenable number.

542508493 is a deficient number, since it is larger than the sum of its proper divisors (1).

542508493 is an equidigital number, since it uses as much as digits as its factorization.

542508493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 542508493 is about 23291.8117157082. The cubic root of 542508493 is about 815.5842814882.

The spelling of 542508493 in words is "five hundred forty-two million, five hundred eight thousand, four hundred ninety-three".