421431465 has 64 divisors (see below), whose sum is σ = 839462400. Its totient is φ = 175785984.

The previous prime is 421431449. The next prime is 421431473. The reversal of 421431465 is 564134124.

It is not a de Polignac number, because 421431465 - 2⁴ = 421431449 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 119751 + ... + 123219.

It is an arithmetic number, because the mean of its divisors is an integer number (13116600).

Almost surely, 2^421431465 is an apocalyptic number.

It is an amenable number.

421431465 is a deficient number, since it is larger than the sum of its proper divisors (418030935).

421431465 is a wasteful number, since it uses less digits than its factorization.

421431465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586.

The product of its digits is 11520, while the sum is 30.

The square root of 421431465 is about 20528.7959948946. The cubic root of 421431465 is about 749.7370722806.

Adding to 421431465 its reverse (564134124), we get a palindrome (985565589).

The spelling of 421431465 in words is "four hundred twenty-one million, four hundred thirty-one thousand, four hundred sixty-five".