421242512 has 20 divisors (see below), whose sum is σ = 817666416. Its totient is φ = 210231840.

The previous prime is 421242511. The next prime is 421242517. The reversal of 421242512 is 215242124.

It is not an unprimeable number, because it can be changed into a prime (421242511) 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 3 ways as a sum of consecutive naturals, for example, 15314 + ... + 32817.

Almost surely, 2^421242512 is an apocalyptic number.

It is an amenable number.

421242512 is a deficient number, since it is larger than the sum of its proper divisors (396423904).

421242512 is a wasteful number, since it uses less digits than its factorization.

421242512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48686 (or 48680 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

The square root of 421242512 is about 20524.1933337220. The cubic root of 421242512 is about 749.6250048324.

Adding to 421242512 its reverse (215242124), we get a palindrome (636484636).

The spelling of 421242512 in words is "four hundred twenty-one million, two hundred forty-two thousand, five hundred twelve".