210320412420 has 96 divisors (see below), whose sum is σ = 597268288512. Its totient is φ = 55288977408.

The previous prime is 210320412373. The next prime is 210320412509. The reversal of 210320412420 is 24214023012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9418989 + ... + 9441291.

It is an arithmetic number, because the mean of its divisors is an integer number (6221544672).

Almost surely, 2^210320412420 is an apocalyptic number.

210320412420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210320412420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298634144256).

210320412420 is an abundant number, since it is smaller than the sum of its proper divisors (386947876092).

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

210320412420 is a wasteful number, since it uses less digits than its factorization.

210320412420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24541 (or 24539 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 210320412420 its reverse (24214023012), we get a palindrome (234534435432).

The spelling of 210320412420 in words is "two hundred ten billion, three hundred twenty million, four hundred twelve thousand, four hundred twenty".