426521005 has 8 divisors (see below), whose sum is σ = 522715392. Its totient is φ = 333956688.

The previous prime is 426521003. The next prime is 426521023. The reversal of 426521005 is 500125624.

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 426521005 - 2¹ = 426521003 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 (426521003) 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, 907257 + ... + 907726.

It is an arithmetic number, because the mean of its divisors is an integer number (65339424).

Almost surely, 2^426521005 is an apocalyptic number.

It is an amenable number.

426521005 is a deficient number, since it is larger than the sum of its proper divisors (96194387).

426521005 is a wasteful number, since it uses less digits than its factorization.

426521005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815035.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 426521005 is about 20652.3849712327. The cubic root of 426521005 is about 752.7431428061.

Adding to 426521005 its reverse (500125624), we get a palindrome (926646629).

The spelling of 426521005 in words is "four hundred twenty-six million, five hundred twenty-one thousand, five".