542664943 has 2 divisors, whose sum is σ = 542664944. Its totient is φ = 542664942.

The previous prime is 542664937. The next prime is 542664953. The reversal of 542664943 is 349466245.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542664943 - 2⁵ = 542664911 is a prime.

It is a super-2 number, since 2×542664943² = 588970480722386498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 542664943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542664953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271332471 + 271332472.

It is an arithmetic number, because the mean of its divisors is an integer number (271332472).

Almost surely, 2^542664943 is an apocalyptic number.

542664943 is a deficient number, since it is larger than the sum of its proper divisors (1).

542664943 is an equidigital number, since it uses as much as digits as its factorization.

542664943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 43.

The square root of 542664943 is about 23295.1699500132. The cubic root of 542664943 is about 815.6626740534.

The spelling of 542664943 in words is "five hundred forty-two million, six hundred sixty-four thousand, nine hundred forty-three".