42206543 has 8 divisors (see below), whose sum is σ = 44887920. Its totient is φ = 39571200.

The previous prime is 42206533. The next prime is 42206551. The reversal of 42206543 is 34560224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42206543 - 2⁸ = 42206287 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 (42206533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9608 + ... + 13293.

It is an arithmetic number, because the mean of its divisors is an integer number (5610990).

Almost surely, 2^42206543 is an apocalyptic number.

42206543 is a deficient number, since it is larger than the sum of its proper divisors (2681377).

42206543 is a wasteful number, since it uses less digits than its factorization.

42206543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23017.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 42206543 is about 6496.6562938176. The cubic root of 42206543 is about 348.1715337684.

Adding to 42206543 its reverse (34560224), we get a palindrome (76766767).

The spelling of 42206543 in words is "forty-two million, two hundred six thousand, five hundred forty-three".