420401312 has 12 divisors (see below), whose sum is σ = 827665146. Its totient is φ = 210200640.

The previous prime is 420401297. The next prime is 420401321. The reversal of 420401312 is 213104024.

It can be written as a sum of positive squares in only one way, i.e., 370331536 + 50069776 = 19244^2 + 7076^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6568739 + ... + 6568802.

Almost surely, 2^420401312 is an apocalyptic number.

It is an amenable number.

420401312 is a deficient number, since it is larger than the sum of its proper divisors (407263834).

420401312 is a wasteful number, since it uses less digits than its factorization.

420401312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13137551 (or 13137543 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 420401312 is about 20503.6902044486. The cubic root of 420401312 is about 749.1256845668.

Adding to 420401312 its reverse (213104024), we get a palindrome (633505336).

The spelling of 420401312 in words is "four hundred twenty million, four hundred one thousand, three hundred twelve".