42206459 has 4 divisors (see below), whose sum is σ = 42219600. Its totient is φ = 42193320.

The previous prime is 42206441. The next prime is 42206473. The reversal of 42206459 is 95460224.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42206459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42206419) 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, 1817 + ... + 9365.

It is an arithmetic number, because the mean of its divisors is an integer number (10554900).

Almost surely, 2^42206459 is an apocalyptic number.

42206459 is a deficient number, since it is larger than the sum of its proper divisors (13141).

42206459 is an equidigital number, since it uses as much as digits as its factorization.

42206459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13140.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 42206459 is about 6496.6498289503. The cubic root of 42206459 is about 348.1713027898.

The spelling of 42206459 in words is "forty-two million, two hundred six thousand, four hundred fifty-nine".