421344412 has 6 divisors (see below), whose sum is σ = 737352728. Its totient is φ = 210672204.

The previous prime is 421344409. The next prime is 421344421. The reversal of 421344412 is 214443124.

It is a super-2 number, since 2×421344412² = 355062227047251488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52668048 + ... + 52668055.

Almost surely, 2^421344412 is an apocalyptic number.

It is an amenable number.

421344412 is a deficient number, since it is larger than the sum of its proper divisors (316008316).

421344412 is a wasteful number, since it uses less digits than its factorization.

421344412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105336107 (or 105336105 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 421344412 is about 20526.6756197880. The cubic root of 421344412 is about 749.6854455739.

Adding to 421344412 its reverse (214443124), we get a palindrome (635787536).

The spelling of 421344412 in words is "four hundred twenty-one million, three hundred forty-four thousand, four hundred twelve".