421315740 has 72 divisors (see below), whose sum is σ = 1279802160. Its totient is φ = 112191744.

The previous prime is 421315733. The next prime is 421315751. The reversal of 421315740 is 47513124.

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 23 ways as a sum of consecutive naturals, for example, 182272 + ... + 184568.

It is an arithmetic number, because the mean of its divisors is an integer number (17775030).

Almost surely, 2^421315740 is an apocalyptic number.

It is an amenable number.

421315740 is an abundant number, since it is smaller than the sum of its proper divisors (858486420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421315740 is a wasteful number, since it uses less digits than its factorization.

421315740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331 (or 3326 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 421315740 is about 20525.9771996366. The cubic root of 421315740 is about 749.6684401123.

Adding to 421315740 its reverse (47513124), we get a palindrome (468828864).

The spelling of 421315740 in words is "four hundred twenty-one million, three hundred fifteen thousand, seven hundred forty".