450144420 has 48 divisors (see below), whose sum is σ = 1374988608. Its totient is φ = 109125760.

The previous prime is 450144403. The next prime is 450144463. The reversal of 450144420 is 24441054.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340359 + ... + 341678.

It is an arithmetic number, because the mean of its divisors is an integer number (28645596).

Almost surely, 2^450144420 is an apocalyptic number.

It is an amenable number.

450144420 is an abundant number, since it is smaller than the sum of its proper divisors (924844188).

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

450144420 is a wasteful number, since it uses less digits than its factorization.

450144420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682060 (or 682058 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 450144420 is about 21216.6071745696. The cubic root of 450144420 is about 766.3914017055.

Adding to 450144420 its reverse (24441054), we get a palindrome (474585474).

The spelling of 450144420 in words is "four hundred fifty million, one hundred forty-four thousand, four hundred twenty".