426905 has 4 divisors (see below), whose sum is σ = 512292. Its totient is φ = 341520.

The previous prime is 426893. The next prime is 426913. The reversal of 426905 is 509624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 85849 + 341056 = 293^2 + 584^2 .

It is not a de Polignac number, because 426905 - 2⁴ = 426889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42686 + ... + 42695.

It is an arithmetic number, because the mean of its divisors is an integer number (128073).

2⁴²⁶⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

426905 is a deficient number, since it is larger than the sum of its proper divisors (85387).

426905 is an equidigital number, since it uses as much as digits as its factorization.

426905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85386.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 426905 is about 653.3796752272. The cubic root of 426905 is about 75.2968972171.

It can be divided in two parts, 426 and 905, that added together give a palindrome (1331).

The spelling of 426905 in words is "four hundred twenty-six thousand, nine hundred five".