450321240 has 32 divisors (see below), whose sum is σ = 1350964080. Its totient is φ = 120085632.

The previous prime is 450321229. The next prime is 450321247. The reversal of 450321240 is 42123054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450321247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876219 + ... + 1876458.

Almost surely, 2^450321240 is an apocalyptic number.

450321240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450321240 is an abundant number, since it is smaller than the sum of its proper divisors (900642840).

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

450321240 is a wasteful number, since it uses less digits than its factorization.

450321240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752691 (or 3752687 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 450321240 is about 21220.7737841955. The cubic root of 450321240 is about 766.4917366068.

Adding to 450321240 its reverse (42123054), we get a palindrome (492444294).

The spelling of 450321240 in words is "four hundred fifty million, three hundred twenty-one thousand, two hundred forty".