421282624 has 56 divisors (see below), whose sum is σ = 959388480. Its totient is φ = 179798016.

The previous prime is 421282621. The next prime is 421282643. The reversal of 421282624 is 426282124.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421282621) 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, 113307 + ... + 116965.

Almost surely, 2^421282624 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 421282624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479694240).

421282624 is an abundant number, since it is smaller than the sum of its proper divisors (538105856).

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

421282624 is a wasteful number, since it uses less digits than its factorization.

421282624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935 (or 3925 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

The square root of 421282624 is about 20525.1704986828. The cubic root of 421282624 is about 749.6487979389.

The spelling of 421282624 in words is "four hundred twenty-one million, two hundred eighty-two thousand, six hundred twenty-four".