420444552 has 64 divisors (see below), whose sum is σ = 1186228800. Its totient is φ = 123011840.

The previous prime is 420444499. The next prime is 420444569. The reversal of 420444552 is 255444024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19803 + ... + 35114.

It is an arithmetic number, because the mean of its divisors is an integer number (18534825).

Almost surely, 2^420444552 is an apocalyptic number.

It is an amenable number.

420444552 is an abundant number, since it is smaller than the sum of its proper divisors (765784248).

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

420444552 is a wasteful number, since it uses less digits than its factorization.

420444552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54966 (or 54962 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 420444552 is about 20504.7446216723. The cubic root of 420444552 is about 749.1513672365.

Adding to 420444552 its reverse (255444024), we get a palindrome (675888576).

The spelling of 420444552 in words is "four hundred twenty million, four hundred forty-four thousand, five hundred fifty-two".