421420512 has 48 divisors (see below), whose sum is σ = 1109036880. Its totient is φ = 140116992.

The previous prime is 421420501. The next prime is 421420537. The reversal of 421420512 is 215024124.

It is a tau number, because it is divible by the number of its divisors (48).

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, 33898 + ... + 44630.

It is an arithmetic number, because the mean of its divisors is an integer number (23104935).

Almost surely, 2^421420512 is an apocalyptic number.

It is an amenable number.

421420512 is an abundant number, since it is smaller than the sum of its proper divisors (687616368).

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

421420512 is a wasteful number, since it uses less digits than its factorization.

421420512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11155 (or 11147 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 421420512 is about 20528.5292215492. The cubic root of 421420512 is about 749.7305770044.

Adding to 421420512 its reverse (215024124), we get a palindrome (636444636).

The spelling of 421420512 in words is "four hundred twenty-one million, four hundred twenty thousand, five hundred twelve".