402321064 has 16 divisors (see below), whose sum is σ = 765612000. Its totient is φ = 198157872.

The previous prime is 402321061. The next prime is 402321079. The reversal of 402321064 is 460123204.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (402321061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374764 + ... + 375835.

It is an arithmetic number, because the mean of its divisors is an integer number (47850750).

Almost surely, 2^402321064 is an apocalyptic number.

It is an amenable number.

402321064 is a deficient number, since it is larger than the sum of its proper divisors (363290936).

402321064 is a wasteful number, since it uses less digits than its factorization.

402321064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750672 (or 750668 counting only the distinct ones).

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

The square root of 402321064 is about 20057.9426661859. The cubic root of 402321064 is about 738.2286975163.

Adding to 402321064 its reverse (460123204), we get a palindrome (862444268).

The spelling of 402321064 in words is "four hundred two million, three hundred twenty-one thousand, sixty-four".