4245450321 has 32 divisors (see below), whose sum is σ = 6550675200. Its totient is φ = 2395514880.

The previous prime is 4245450317. The next prime is 4245450323. The reversal of 4245450321 is 1230545424.

It is not a de Polignac number, because 4245450321 - 2² = 4245450317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4245450323) 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 31 ways as a sum of consecutive naturals, for example, 2542875 + ... + 2544543.

It is an arithmetic number, because the mean of its divisors is an integer number (204708600).

Almost surely, 2^4245450321 is an apocalyptic number.

It is an amenable number.

4245450321 is a deficient number, since it is larger than the sum of its proper divisors (2305224879).

4245450321 is a wasteful number, since it uses less digits than its factorization.

4245450321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 4245450321 is about 65157.1202632529. The cubic root of 4245450321 is about 1619.2276866619.

Adding to 4245450321 its reverse (1230545424), we get a palindrome (5475995745).

The spelling of 4245450321 in words is "four billion, two hundred forty-five million, four hundred fifty thousand, three hundred twenty-one".