420660226 has 16 divisors (see below), whose sum is σ = 725304384. Its totient is φ = 179239824.

The previous prime is 420660221. The next prime is 420660239. The reversal of 420660226 is 622066024.

It is a junction number, because it is equal to n+sod(n) for n = 420660194 and 420660203.

It is not an unprimeable number, because it can be changed into a prime (420660221) 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, 84420 + ... + 89263.

It is an arithmetic number, because the mean of its divisors is an integer number (45331524).

Almost surely, 2^420660226 is an apocalyptic number.

420660226 is a deficient number, since it is larger than the sum of its proper divisors (304644158).

420660226 is a wasteful number, since it uses less digits than its factorization.

420660226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173865.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 420660226 is about 20510.0030716721. The cubic root of 420660226 is about 749.2794418756.

The spelling of 420660226 in words is "four hundred twenty million, six hundred sixty thousand, two hundred twenty-six".