542739697 has 2 divisors, whose sum is σ = 542739698. Its totient is φ = 542739696.

The previous prime is 542739677. The next prime is 542739713. The reversal of 542739697 is 796937245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 464876721 + 77862976 = 21561^2 + 8824^2 .

It is a cyclic number.

It is not a de Polignac number, because 542739697 - 2²⁷ = 408521969 is a prime.

It is not a weakly prime, because it can be changed into another prime (542739647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271369848 + 271369849.

It is an arithmetic number, because the mean of its divisors is an integer number (271369849).

Almost surely, 2^542739697 is an apocalyptic number.

It is an amenable number.

542739697 is a deficient number, since it is larger than the sum of its proper divisors (1).

542739697 is an equidigital number, since it uses as much as digits as its factorization.

542739697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 52.

The square root of 542739697 is about 23296.7743904602. The cubic root of 542739697 is about 815.7001257988.

The spelling of 542739697 in words is "five hundred forty-two million, seven hundred thirty-nine thousand, six hundred ninety-seven".