426665402 has 16 divisors (see below), whose sum is σ = 648468072. Its totient is φ = 210528000.

The previous prime is 426665399. The next prime is 426665441. The reversal of 426665402 is 204566624.

It can be written as a sum of positive squares in 4 ways, for example, as 393268561 + 33396841 = 19831^2 + 5779^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42902 + ... + 51902.

Almost surely, 2^426665402 is an apocalyptic number.

426665402 is a deficient number, since it is larger than the sum of its proper divisors (221802670).

426665402 is a wasteful number, since it uses less digits than its factorization.

426665402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9313.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 426665402 is about 20655.8805670443. The cubic root of 426665402 is about 752.8280792935.

The spelling of 426665402 in words is "four hundred twenty-six million, six hundred sixty-five thousand, four hundred two".