42955543 has 4 divisors (see below), whose sum is σ = 43171600. Its totient is φ = 42739488.

The previous prime is 42955537. The next prime is 42955547. The reversal of 42955543 is 34555924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42955543 - 2¹³ = 42947351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42955547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107730 + ... + 108127.

It is an arithmetic number, because the mean of its divisors is an integer number (10792900).

Almost surely, 2^42955543 is an apocalyptic number.

42955543 is a deficient number, since it is larger than the sum of its proper divisors (216057).

42955543 is a wasteful number, since it uses less digits than its factorization.

42955543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216056.

The product of its digits is 108000, while the sum is 37.

The square root of 42955543 is about 6554.0478332096. The cubic root of 42955543 is about 350.2190275314.

The spelling of 42955543 in words is "forty-two million, nine hundred fifty-five thousand, five hundred forty-three".