420323552 has 96 divisors (see below), whose sum is σ = 944576640. Its totient is φ = 182407680.

The previous prime is 420323543. The next prime is 420323573. The reversal of 420323552 is 255323024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768143 + ... + 768689.

It is an arithmetic number, because the mean of its divisors is an integer number (9839340).

Almost surely, 2^420323552 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 420323552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472288320).

420323552 is an abundant number, since it is smaller than the sum of its proper divisors (524253088).

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

420323552 is a wasteful number, since it uses less digits than its factorization.

420323552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 420323552 is about 20501.7938727322. The cubic root of 420323552 is about 749.0794940948.

Adding to 420323552 its reverse (255323024), we get a palindrome (675646576).

The spelling of 420323552 in words is "four hundred twenty million, three hundred twenty-three thousand, five hundred fifty-two".