420130331320 has 128 divisors (see below), whose sum is σ = 1097468559360. Its totient is φ = 141764198400.

The previous prime is 420130331263. The next prime is 420130331359. The reversal of 420130331320 is 23133031024.

It is a junction number, because it is equal to n+sod(n) for n = 420130331291 and 420130331300.

It is a congruent number.

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, 21583032 + ... + 21602488.

It is an arithmetic number, because the mean of its divisors is an integer number (8573973120).

Almost surely, 2^420130331320 is an apocalyptic number.

420130331320 is a gapful number since it is divisible by the number (40) 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 420130331320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548734279680).

420130331320 is an abundant number, since it is smaller than the sum of its proper divisors (677338228040).

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

420130331320 is a wasteful number, since it uses less digits than its factorization.

420130331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20693 (or 20689 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 420130331320 its reverse (23133031024), we get a palindrome (443263362344).

The spelling of 420130331320 in words is "four hundred twenty billion, one hundred thirty million, three hundred thirty-one thousand, three hundred twenty".