421065512 has 48 divisors (see below), whose sum is σ = 911060640. Its totient is φ = 178715808.

The previous prime is 421065511. The next prime is 421065521. The reversal of 421065512 is 215560124.

It is not an unprimeable number, because it can be changed into a prime (421065511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1487723 + ... + 1488005.

It is an arithmetic number, because the mean of its divisors is an integer number (18980430).

Almost surely, 2^421065512 is an apocalyptic number.

It is an amenable number.

421065512 is an abundant number, since it is smaller than the sum of its proper divisors (489995128).

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

421065512 is a wasteful number, since it uses less digits than its factorization.

421065512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 421065512 is about 20519.8808963405. The cubic root of 421065512 is about 749.5199962682.

The spelling of 421065512 in words is "four hundred twenty-one million, sixty-five thousand, five hundred twelve".