421020310 has 16 divisors (see below), whose sum is σ = 775461456. Its totient is φ = 164491488.

The previous prime is 421020307. The next prime is 421020329. The reversal of 421020310 is 13020124.

It is a super-2 number, since 2×421020310² = 354516202864992200, which contains 22 as substring.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 489129 + ... + 489988.

It is an arithmetic number, because the mean of its divisors is an integer number (48466341).

Almost surely, 2^421020310 is an apocalyptic number.

421020310 is a deficient number, since it is larger than the sum of its proper divisors (354441146).

421020310 is a wasteful number, since it uses less digits than its factorization.

421020310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979167.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 421020310 is about 20518.7794471309. The cubic root of 421020310 is about 749.4931746182.

Adding to 421020310 its reverse (13020124), we get a palindrome (434040434).

The spelling of 421020310 in words is "four hundred twenty-one million, twenty thousand, three hundred ten".