420064321 has 4 divisors (see below), whose sum is σ = 420120000. Its totient is φ = 420008644.

The previous prime is 420064303. The next prime is 420064327. The reversal of 420064321 is 123460024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420064321 - 2⁷ = 420064193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420064292 and 420064301.

It is not an unprimeable number, because it can be changed into a prime (420064327) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14341 + ... + 32338.

It is an arithmetic number, because the mean of its divisors is an integer number (105030000).

Almost surely, 2^420064321 is an apocalyptic number.

It is an amenable number.

420064321 is a deficient number, since it is larger than the sum of its proper divisors (55679).

420064321 is an equidigital number, since it uses as much as digits as its factorization.

420064321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55678.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 420064321 is about 20495.4707435570. The cubic root of 420064321 is about 748.9254662753.

The spelling of 420064321 in words is "four hundred twenty million, sixty-four thousand, three hundred twenty-one".