421513344 has 192 divisors, whose sum is σ = 1398983040. Its totient is φ = 119328768.

The previous prime is 421513321. The next prime is 421513357. The reversal of 421513344 is 443315124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1346532 + ... + 1346844.

It is an arithmetic number, because the mean of its divisors is an integer number (7286370).

Almost surely, 2^421513344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421513344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699491520).

421513344 is an abundant number, since it is smaller than the sum of its proper divisors (977469696).

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

421513344 is a wasteful number, since it uses less digits than its factorization.

421513344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 492 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 421513344 is about 20530.7901455351. The cubic root of 421513344 is about 749.7856240631.

Adding to 421513344 its reverse (443315124), we get a palindrome (864828468).

The spelling of 421513344 in words is "four hundred twenty-one million, five hundred thirteen thousand, three hundred forty-four".