424442420 has 24 divisors (see below), whose sum is σ = 891833544. Its totient is φ = 169680896.

The previous prime is 424442411. The next prime is 424442461. The reversal of 424442420 is 24244424.

It can be written as a sum of positive squares in 4 ways, for example, as 16 + 424442404 = 4^2 + 20602^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 424442420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38132 + ... + 47988.

It is an arithmetic number, because the mean of its divisors is an integer number (37159731).

Almost surely, 2^424442420 is an apocalyptic number.

It is an amenable number.

424442420 is an abundant number, since it is smaller than the sum of its proper divisors (467391124).

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

424442420 is a wasteful number, since it uses less digits than its factorization.

424442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12019 (or 12017 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 424442420 is about 20602.0003883118. Note that the first 3 decimals coincide. The cubic root of 424442420 is about 751.5183581179.

Adding to 424442420 its reverse (24244424), we get a palindrome (448686844).

It can be divided in two parts, 4244 and 42420, that added together give a palindrome (46664).

The spelling of 424442420 in words is "four hundred twenty-four million, four hundred forty-two thousand, four hundred twenty".