421304012 has 24 divisors (see below), whose sum is σ = 761964672. Its totient is φ = 203616000.

The previous prime is 421304011. The next prime is 421304021. The reversal of 421304012 is 210403124.

It is a super-2 number, since 2×421304012² = 354994141054592288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421304011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149012 + ... + 151812.

It is an arithmetic number, because the mean of its divisors is an integer number (31748528).

Almost surely, 2^421304012 is an apocalyptic number.

It is an amenable number.

421304012 is a deficient number, since it is larger than the sum of its proper divisors (340660660).

421304012 is a wasteful number, since it uses less digits than its factorization.

421304012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049 (or 4047 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421304012 is about 20525.6915108846. The cubic root of 421304012 is about 749.6614839729.

Adding to 421304012 its reverse (210403124), we get a palindrome (631707136).

The spelling of 421304012 in words is "four hundred twenty-one million, three hundred four thousand, twelve".