421440424120210 has 64 divisors (see below), whose sum is σ = 833610062041344. Its totient is φ = 152129929881600.

The previous prime is 421440424120207. The next prime is 421440424120211. The reversal of 421440424120210 is 12021424044124.

It is a super-2 number, since 2×421440424120210² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421440424120211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1079886874 + ... + 1080277066.

It is an arithmetic number, because the mean of its divisors is an integer number (13025157219396).

Almost surely, 2^{421440424120210} is an apocalyptic number.

421440424120210 is a deficient number, since it is larger than the sum of its proper divisors (412169637921134).

421440424120210 is a wasteful number, since it uses less digits than its factorization.

421440424120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462019.

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 421440424120210 its reverse (12021424044124), we get a palindrome (433461848164334).

The spelling of 421440424120210 in words is "four hundred twenty-one trillion, four hundred forty billion, four hundred twenty-four million, one hundred twenty thousand, two hundred ten".