421550240210 has 128 divisors (see below), whose sum is σ = 857609994240. Its totient is φ = 147891744000.

The previous prime is 421550240159. The next prime is 421550240213. The reversal of 421550240210 is 12042055124.

It is a super-2 number, since 2×421550240210² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421550240210.

It is not an unprimeable number, because it can be changed into a prime (421550240213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73940360 + ... + 73946060.

It is an arithmetic number, because the mean of its divisors is an integer number (6700078080).

Almost surely, 2^421550240210 is an apocalyptic number.

421550240210 is an abundant number, since it is smaller than the sum of its proper divisors (436059754030).

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

421550240210 is a wasteful number, since it uses less digits than its factorization.

421550240210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 421550240210 its reverse (12042055124), we get a palindrome (433592295334).

The spelling of 421550240210 in words is "four hundred twenty-one billion, five hundred fifty million, two hundred forty thousand, two hundred ten".