421346564 has 12 divisors (see below), whose sum is σ = 780730524. Its totient is φ = 198280704.

The previous prime is 421346561. The next prime is 421346567. The reversal of 421346564 is 465643124.

It is an interprime number because it is at equal distance from previous prime (421346561) and next prime (421346567).

It can be written as a sum of positive squares in 2 ways, for example, as 260564164 + 160782400 = 16142^2 + 12680^2 .

It is not an unprimeable number, because it can be changed into a prime (421346561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3098069 + ... + 3098204.

It is an arithmetic number, because the mean of its divisors is an integer number (65060877).

Almost surely, 2^421346564 is an apocalyptic number.

It is an amenable number.

421346564 is a deficient number, since it is larger than the sum of its proper divisors (359383960).

421346564 is a wasteful number, since it uses less digits than its factorization.

421346564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6196294 (or 6196292 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 421346564 is about 20526.7280393150. The cubic root of 421346564 is about 749.6867219014.

Adding to 421346564 its reverse (465643124), we get a palindrome (886989688).

The spelling of 421346564 in words is "four hundred twenty-one million, three hundred forty-six thousand, five hundred sixty-four".