421960566 has 16 divisors (see below), whose sum is σ = 858225600. Its totient is φ = 138269448.

The previous prime is 421960537. The next prime is 421960577. The reversal of 421960566 is 665069124.

It is a congruent number.

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, 595636 + ... + 596343.

It is an arithmetic number, because the mean of its divisors is an integer number (53639100).

Almost surely, 2^421960566 is an apocalyptic number.

421960566 is an abundant number, since it is smaller than the sum of its proper divisors (436265034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421960566 is a wasteful number, since it uses less digits than its factorization.

421960566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192043.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 421960566 is about 20541.6787532081. The cubic root of 421960566 is about 750.0507023501.

The spelling of 421960566 in words is "four hundred twenty-one million, nine hundred sixty thousand, five hundred sixty-six".