423430021066 has 16 divisors (see below), whose sum is σ = 724237774344. Its totient is φ = 183933402624.

The previous prime is 423430021043. The next prime is 423430021073. The reversal of 423430021066 is 660120034324.

It can be written as a sum of positive squares in 4 ways, for example, as 243225526041 + 180204495025 = 493179^2 + 424505^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478992795 + ... + 478993678.

Almost surely, 2^423430021066 is an apocalyptic number.

423430021066 is a deficient number, since it is larger than the sum of its proper divisors (300807753278).

423430021066 is a wasteful number, since it uses less digits than its factorization.

423430021066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957986505.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 423430021066 in words is "four hundred twenty-three billion, four hundred thirty million, twenty-one thousand, sixty-six".