542385643 has 4 divisors (see below), whose sum is σ = 551578680. Its totient is φ = 533192608.

The previous prime is 542385611. The next prime is 542385653. The reversal of 542385643 is 346583245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346583245 = 5 ⋅69316649.

It is a cyclic number.

It is not a de Polignac number, because 542385643 - 2⁵ = 542385611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542385596 and 542385605.

It is not an unprimeable number, because it can be changed into a prime (542385653) 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 in 3 ways as a sum of consecutive naturals, for example, 4596430 + ... + 4596547.

It is an arithmetic number, because the mean of its divisors is an integer number (137894670).

Almost surely, 2^542385643 is an apocalyptic number.

542385643 is a deficient number, since it is larger than the sum of its proper divisors (9193037).

542385643 is an equidigital number, since it uses as much as digits as its factorization.

542385643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9193036.

The product of its digits is 345600, while the sum is 40.

The square root of 542385643 is about 23289.1743735153. The cubic root of 542385643 is about 815.5227143459.

The spelling of 542385643 in words is "five hundred forty-two million, three hundred eighty-five thousand, six hundred forty-three".