421210564 has 36 divisors (see below), whose sum is σ = 787393600. Its totient is φ = 197112960.

The previous prime is 421210549. The next prime is 421210579. The reversal of 421210564 is 465012124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421210549) and next prime (421210579).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 229129 + ... + 230959.

Almost surely, 2^421210564 is an apocalyptic number.

It is an amenable number.

421210564 is a deficient number, since it is larger than the sum of its proper divisors (366183036).

421210564 is a wasteful number, since it uses less digits than its factorization.

421210564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 421210564 is about 20523.4150179740. The cubic root of 421210564 is about 749.6060532590.

Adding to 421210564 its reverse (465012124), we get a palindrome (886222688).

The spelling of 421210564 in words is "four hundred twenty-one million, two hundred ten thousand, five hundred sixty-four".