542116643 has 2 divisors, whose sum is σ = 542116644. Its totient is φ = 542116642.

The previous prime is 542116613. The next prime is 542116657. The reversal of 542116643 is 346611245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542116643 - 2⁶ = 542116579 is a prime.

It is not a weakly prime, because it can be changed into another prime (542116613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271058321 + 271058322.

It is an arithmetic number, because the mean of its divisors is an integer number (271058322).

Almost surely, 2^542116643 is an apocalyptic number.

542116643 is a deficient number, since it is larger than the sum of its proper divisors (1).

542116643 is an equidigital number, since it uses as much as digits as its factorization.

542116643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 542116643 is about 23283.3984418083. The cubic root of 542116643 is about 815.3878706297.

Adding to 542116643 its reverse (346611245), we get a palindrome (888727888).

The spelling of 542116643 in words is "five hundred forty-two million, one hundred sixteen thousand, six hundred forty-three".