426257705 has 8 divisors (see below), whose sum is σ = 517672512. Its totient is φ = 336897328.

The previous prime is 426257651. The next prime is 426257717. The reversal of 426257705 is 507752624.

It is a happy number.

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 426257705 - 2¹⁰ = 426256681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513149 + ... + 513978.

It is an arithmetic number, because the mean of its divisors is an integer number (64709064).

Almost surely, 2^426257705 is an apocalyptic number.

It is an amenable number.

426257705 is a deficient number, since it is larger than the sum of its proper divisors (91414807).

426257705 is a wasteful number, since it uses less digits than its factorization.

426257705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027215.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 426257705 is about 20646.0094207089. The cubic root of 426257705 is about 752.5882164251.

The spelling of 426257705 in words is "four hundred twenty-six million, two hundred fifty-seven thousand, seven hundred five".