421563466 has 16 divisors (see below), whose sum is σ = 643720968. Its totient is φ = 207014400.

The previous prime is 421563449. The next prime is 421563479. The reversal of 421563466 is 664365124.

It can be written as a sum of positive squares in 4 ways, for example, as 419225625 + 2337841 = 20475^2 + 1529^2 .

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, 29196 + ... + 41176.

Almost surely, 2^421563466 is an apocalyptic number.

421563466 is a deficient number, since it is larger than the sum of its proper divisors (222157502).

421563466 is a wasteful number, since it uses less digits than its factorization.

421563466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12297.

The product of its digits is 103680, while the sum is 37.

The square root of 421563466 is about 20532.0107636831. The cubic root of 421563466 is about 749.8153417981.

The spelling of 421563466 in words is "four hundred twenty-one million, five hundred sixty-three thousand, four hundred sixty-six".