65742543 has 16 divisors (see below), whose sum is σ = 97538400. Its totient is φ = 43764480.

The previous prime is 65742541. The next prime is 65742563. The reversal of 65742543 is 34524756.

It is not a de Polignac number, because 65742543 - 2¹ = 65742541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65742498 and 65742507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65742541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23773 + ... + 26393.

It is an arithmetic number, because the mean of its divisors is an integer number (6096150).

Almost surely, 2^65742543 is an apocalyptic number.

65742543 is a deficient number, since it is larger than the sum of its proper divisors (31795857).

65742543 is a wasteful number, since it uses less digits than its factorization.

65742543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559 (or 3553 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 65742543 is about 8108.1775387568. The cubic root of 65742543 is about 403.5978397641.

The spelling of 65742543 in words is "sixty-five million, seven hundred forty-two thousand, five hundred forty-three".