542739677 has 2 divisors, whose sum is σ = 542739678. Its totient is φ = 542739676.

The previous prime is 542739649. The next prime is 542739697. The reversal of 542739677 is 776937245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462207001 + 80532676 = 21499^2 + 8974^2 .

It is a cyclic number.

It is not a de Polignac number, because 542739677 - 2¹⁰ = 542738653 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271369838 + 271369839.

It is an arithmetic number, because the mean of its divisors is an integer number (271369839).

Almost surely, 2^542739677 is an apocalyptic number.

It is an amenable number.

542739677 is a deficient number, since it is larger than the sum of its proper divisors (1).

542739677 is an equidigital number, since it uses as much as digits as its factorization.

542739677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2222640, while the sum is 50.

The square root of 542739677 is about 23296.7739612162. The cubic root of 542739677 is about 815.7001157793.

The spelling of 542739677 in words is "five hundred forty-two million, seven hundred thirty-nine thousand, six hundred seventy-seven".