542508457 has 2 divisors, whose sum is σ = 542508458. Its totient is φ = 542508456.

The previous prime is 542508431. The next prime is 542508493. The reversal of 542508457 is 754805245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321807721 + 220700736 = 17939^2 + 14856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542508457 is a prime.

It is a Chen prime.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271254228 + 271254229.

It is an arithmetic number, because the mean of its divisors is an integer number (271254229).

Almost surely, 2^542508457 is an apocalyptic number.

It is an amenable number.

542508457 is a deficient number, since it is larger than the sum of its proper divisors (1).

542508457 is an equidigital number, since it uses as much as digits as its factorization.

542508457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 542508457 is about 23291.8109429044. The cubic root of 542508457 is about 815.5842634479.

The spelling of 542508457 in words is "five hundred forty-two million, five hundred eight thousand, four hundred fifty-seven".