421312012 has 48 divisors (see below), whose sum is σ = 821802240. Its totient is φ = 187387200.

The previous prime is 421312009. The next prime is 421312019. The reversal of 421312012 is 210213124.

It is a super-2 number, since 2×421312012² = 355007622910976288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421312019) 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 15 ways as a sum of consecutive naturals, for example, 490039 + ... + 490897.

It is an arithmetic number, because the mean of its divisors is an integer number (17120880).

Almost surely, 2^421312012 is an apocalyptic number.

It is an amenable number.

421312012 is a deficient number, since it is larger than the sum of its proper divisors (400490228).

421312012 is a wasteful number, since it uses less digits than its factorization.

421312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 421312012 is about 20525.8863876813. The cubic root of 421312012 is about 749.6662289660. Note that the first 3 decimals are identical.

Adding to 421312012 its reverse (210213124), we get a palindrome (631525136).

The spelling of 421312012 in words is "four hundred twenty-one million, three hundred twelve thousand, twelve".