542446643 has 4 divisors (see below), whose sum is σ = 542995008. Its totient is φ = 541898280.

The previous prime is 542446621. The next prime is 542446699. The reversal of 542446643 is 346644245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346644245 = 5 ⋅69328849.

It is a cyclic number.

It is not a de Polignac number, because 542446643 - 2⁶ = 542446579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542446597 and 542446606.

It is not an unprimeable number, because it can be changed into a prime (542446543) 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 in 3 ways as a sum of consecutive naturals, for example, 272696 + ... + 274677.

It is an arithmetic number, because the mean of its divisors is an integer number (135748752).

Almost surely, 2^542446643 is an apocalyptic number.

542446643 is a deficient number, since it is larger than the sum of its proper divisors (548365).

542446643 is an equidigital number, since it uses as much as digits as its factorization.

542446643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548364.

The product of its digits is 276480, while the sum is 38.

The square root of 542446643 is about 23290.4839580460. The cubic root of 542446643 is about 815.5532860872.

The spelling of 542446643 in words is "five hundred forty-two million, four hundred forty-six thousand, six hundred forty-three".