421443012 has 12 divisors (see below), whose sum is σ = 983367056. Its totient is φ = 140481000.

The previous prime is 421442969. The next prime is 421443049. The reversal of 421443012 is 210344124.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×421443012² = 355228424727264288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421443012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17560114 + ... + 17560137.

Almost surely, 2^421443012 is an apocalyptic number.

It is an amenable number.

421443012 is an abundant number, since it is smaller than the sum of its proper divisors (561924044).

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

421443012 is a wasteful number, since it uses less digits than its factorization.

421443012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35120258 (or 35120256 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421443012 is about 20529.0772320628. The cubic root of 421443012 is about 749.7439196849.

Adding to 421443012 its reverse (210344124), we get a palindrome (631787136).

The spelling of 421443012 in words is "four hundred twenty-one million, four hundred forty-three thousand, twelve".